Finding the Fourth Proportional to 390,955,092.64, 539,503,246.32 and 217,126,034.08
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Solution
The fourth proportional to 390,955,092.64, 539,503,246.32 and 217,126,034.08 is: 299,625,717.77
Step by Step Solution
- Step 1: Write the proportion equation
390,955,092.64 : 539,503,246.32 = 217,126,034.08 : x - Step 2: Convert to fraction form
390,955,092.64/539,503,246.32 = 217,126,034.08/x - Step 3: Cross multiply
390,955,092.64x = 539,503,246.32 × 217,126,034.08 - Step 4: Simplify right side
390,955,092.64x = 117,140,200,246,746,976 - Step 5: Solve for x
x = 117,140,200,246,746,976/390,955,092.64 - Step 6: Final answer
x = 299,625,717.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.