Final answer:
To find out how much Sam Long needs to invest today at an interest rate of 10% compounded semiannually, use the formula for compound interest.
Step-by-step explanation:
To find out how much Sam Long needs to invest today, we can use the formula for compound interest:
PV = FV / (1 + r/n)^(n*t)
Where PV is the present value (the amount Sam needs to invest), FV is the future value (the amount Sam needs in 14 years), r is the interest rate (0.10), n is the number of times interest is compounded per year (2 for semiannually), and t is the number of years (14).
Plugging in the values:
PV = 227300 / (1 + 0.10/2)^(2*14) = $98,432.14
Therefore, Sam would need to invest approximately $98,432.14 today.