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Finding the Fourth Proportional to 625,465.34, 938,198.28 and 152,147.78

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Solution

The fourth proportional to 625,465.34, 938,198.28 and 152,147.78 is: 228,221.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,465.34 : 938,198.28 = 152,147.78 : x
  2. Step 2: Convert to fraction form
    625,465.34/938,198.28 = 152,147.78/x
  3. Step 3: Cross multiply
    625,465.34x = 938,198.28 × 152,147.78
  4. Step 4: Simplify right side
    625,465.34x = 142,744,785,501.82
  5. Step 5: Solve for x
    x = 142,744,785,501.82/625,465.34
  6. Step 6: Final answer
    x = 228,221.74

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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.