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Finding the Fourth Proportional to 454,314.80, 681,472.20 and 138,730.70

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Solution

The fourth proportional to 454,314.80, 681,472.20 and 138,730.70 is: 208,096.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,314.80 : 681,472.20 = 138,730.70 : x
  2. Step 2: Convert to fraction form
    454,314.80/681,472.20 = 138,730.70/x
  3. Step 3: Cross multiply
    454,314.80x = 681,472.20 × 138,730.70
  4. Step 4: Simplify right side
    454,314.80x = 94,541,115,336.54
  5. Step 5: Solve for x
    x = 94,541,115,336.54/454,314.80
  6. Step 6: Final answer
    x = 208,096.05

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Similar ratio
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1.5x scale

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.