Finding the Fourth Proportional to 317,605,720.86, 438,276,680.97 and 176,472,115.47
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Solution
The fourth proportional to 317,605,720.86, 438,276,680.97 and 176,472,115.47 is: 243,520,843.52
Step by Step Solution
- Step 1: Write the proportion equation
317,605,720.86 : 438,276,680.97 = 176,472,115.47 : x - Step 2: Convert to fraction form
317,605,720.86/438,276,680.97 = 176,472,115.47/x - Step 3: Cross multiply
317,605,720.86x = 438,276,680.97 × 176,472,115.47 - Step 4: Simplify right side
317,605,720.86x = 77,343,613,051,043,792 - Step 5: Solve for x
x = 77,343,613,051,043,792/317,605,720.86 - Step 6: Final answer
x = 243,520,843.52
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.