Finding the Fourth Proportional to 390,643.36, 585,983.04 and 165,971.68
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Solution
The fourth proportional to 390,643.36, 585,983.04 and 165,971.68 is: 248,965.17
Step by Step Solution
- Step 1: Write the proportion equation
390,643.36 : 585,983.04 = 165,971.68 : x - Step 2: Convert to fraction form
390,643.36/585,983.04 = 165,971.68/x - Step 3: Cross multiply
390,643.36x = 585,983.04 × 165,971.68 - Step 4: Simplify right side
390,643.36x = 97,256,589,600.31 - Step 5: Solve for x
x = 97,256,589,600.31/390,643.36 - Step 6: Final answer
x = 248,965.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.