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Finding the Fourth Proportional to 472,213.47, 708,528.89 and 247,520.18

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Solution

The fourth proportional to 472,213.47, 708,528.89 and 247,520.18 is: 371,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,213.47 : 708,528.89 = 247,520.18 : x
  2. Step 2: Convert to fraction form
    472,213.47/708,528.89 = 247,520.18/x
  3. Step 3: Cross multiply
    472,213.47x = 708,528.89 × 247,520.18
  4. Step 4: Simplify right side
    472,213.47x = 175,375,200,778.12
  5. Step 5: Solve for x
    x = 175,375,200,778.12/472,213.47
  6. Step 6: Final answer
    x = 371,389.66

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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.