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Finding the Fourth Proportional to 452,863.20, 679,359.60 and 137,344.80

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Solution

The fourth proportional to 452,863.20, 679,359.60 and 137,344.80 is: 206,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,863.20 : 679,359.60 = 137,344.80 : x
  2. Step 2: Convert to fraction form
    452,863.20/679,359.60 = 137,344.80/x
  3. Step 3: Cross multiply
    452,863.20x = 679,359.60 × 137,344.80
  4. Step 4: Simplify right side
    452,863.20x = 93,306,508,390.08
  5. Step 5: Solve for x
    x = 93,306,508,390.08/452,863.20
  6. Step 6: Final answer
    x = 206,036.85

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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.