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Finding the Fourth Proportional to 486,951.30, 730,081.35 and 187,316.10

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Solution

The fourth proportional to 486,951.30, 730,081.35 and 187,316.10 is: 280,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,951.30 : 730,081.35 = 187,316.10 : x
  2. Step 2: Convert to fraction form
    486,951.30/730,081.35 = 187,316.10/x
  3. Step 3: Cross multiply
    486,951.30x = 730,081.35 × 187,316.10
  4. Step 4: Simplify right side
    486,951.30x = 136,755,991,164.74
  5. Step 5: Solve for x
    x = 136,755,991,164.74/486,951.30
  6. Step 6: Final answer
    x = 280,841.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.