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Finding the Fourth Proportional to 472,213.38, 708,528.75 and 247,520.09

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Solution

The fourth proportional to 472,213.38, 708,528.75 and 247,520.09 is: 371,389.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,213.38 : 708,528.75 = 247,520.09 : x
  2. Step 2: Convert to fraction form
    472,213.38/708,528.75 = 247,520.09/x
  3. Step 3: Cross multiply
    472,213.38x = 708,528.75 × 247,520.09
  4. Step 4: Simplify right side
    472,213.38x = 175,375,098,153.73
  5. Step 5: Solve for x
    x = 175,375,098,153.73/472,213.38
  6. Step 6: Final answer
    x = 371,389.51

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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.