<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\0221D";
}
</style>
</head>
<body>
<p>Proportional To using Hexa Decimal: ∝</p>
<p>Proportional To using HTML Code: ∝</p>
<p>Proportional To using HTML Entity: ∝</p>
<p id="point">Proportional To using CSS Entity: </p>
</body>
</html>