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Finding the Fourth Proportional to 486,759.61, 730,139.97 and 126,930.14

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Solution

The fourth proportional to 486,759.61, 730,139.97 and 126,930.14 is: 190,395.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,759.61 : 730,139.97 = 126,930.14 : x
  2. Step 2: Convert to fraction form
    486,759.61/730,139.97 = 126,930.14/x
  3. Step 3: Cross multiply
    486,759.61x = 730,139.97 × 126,930.14
  4. Step 4: Simplify right side
    486,759.61x = 92,676,768,611.70
  5. Step 5: Solve for x
    x = 92,676,768,611.70/486,759.61
  6. Step 6: Final answer
    x = 190,395.35

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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.