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Finding the Fourth Proportional to 625,429.46, 938,135.28 and 152,115.68

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Solution

The fourth proportional to 625,429.46, 938,135.28 and 152,115.68 is: 228,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,429.46 : 938,135.28 = 152,115.68 : x
  2. Step 2: Convert to fraction form
    625,429.46/938,135.28 = 152,115.68/x
  3. Step 3: Cross multiply
    625,429.46x = 938,135.28 × 152,115.68
  4. Step 4: Simplify right side
    625,429.46x = 142,705,086,049.19
  5. Step 5: Solve for x
    x = 142,705,086,049.19/625,429.46
  6. Step 6: Final answer
    x = 228,171.35

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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.