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Finding the Fourth Proportional to 354,458.52, 531,532.26 and 132,687

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Solution

The fourth proportional to 354,458.52, 531,532.26 and 132,687 is: 198,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,458.52 : 531,532.26 = 132,687 : x
  2. Step 2: Convert to fraction form
    354,458.52/531,532.26 = 132,687/x
  3. Step 3: Cross multiply
    354,458.52x = 531,532.26 × 132,687
  4. Step 4: Simplify right side
    354,458.52x = 70,527,420,982.62
  5. Step 5: Solve for x
    x = 70,527,420,982.62/354,458.52
  6. Step 6: Final answer
    x = 198,972.28

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1.5x scale

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.