Arithmetic on today's supply, not a forecast. It assumes nothing about whether Litecoin could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. Litecoin has 77,574,272 LTC in circulation at $54.3000 each, which is $4.21B. Holding that supply still and putting Zcash's $19.39B in its place gives $249.9100 per LTC.
A 4.60x move is modest, and a coin this far down the table reaching the one above it is the ordinary shape of a cycle, not an outlier.
Supply is held still, and in practice it moves: coins are minted, burned and unlocked, and every one of those changes the price a given market capitalisation implies. The figure also says nothing about whether the money exists to buy LTC at that level, which is the part that actually decides a price.
$249.9100 per LTC. That is Zcash's current market capitalisation of $19.39B divided across the 77,574,272 LTC in circulation.
4.60x. Litecoin trades at $54.3000 today and Zcash's market cap is $19.39B against Litecoin's $4.21B.
No. It is one division: Zcash's market capitalisation spread over the supply of LTC that exists today. It assumes nothing about whether Litecoin could attract that much money, and it holds the supply still when in practice supply changes.
It sets it. Market cap is price times circulating supply, so the same $19.39B of market cap spread over more coins gives a lower price per coin. This uses the 77,574,272 LTC in circulation now.