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Finding the Fourth Proportional to 323,438.64, 485,251.50 and 133,863.96

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Solution

The fourth proportional to 323,438.64, 485,251.50 and 133,863.96 is: 200,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,438.64 : 485,251.50 = 133,863.96 : x
  2. Step 2: Convert to fraction form
    323,438.64/485,251.50 = 133,863.96/x
  3. Step 3: Cross multiply
    323,438.64x = 485,251.50 × 133,863.96
  4. Step 4: Simplify right side
    323,438.64x = 64,957,687,385.94
  5. Step 5: Solve for x
    x = 64,957,687,385.94/323,438.64
  6. Step 6: Final answer
    x = 200,834.65

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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.