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Finding the Fourth Proportional to 487,002.40, 730,503.60 and 132,015.85

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Solution

The fourth proportional to 487,002.40, 730,503.60 and 132,015.85 is: 198,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,002.40 : 730,503.60 = 132,015.85 : x
  2. Step 2: Convert to fraction form
    487,002.40/730,503.60 = 132,015.85/x
  3. Step 3: Cross multiply
    487,002.40x = 730,503.60 × 132,015.85
  4. Step 4: Simplify right side
    487,002.40x = 96,438,053,682.06
  5. Step 5: Solve for x
    x = 96,438,053,682.06/487,002.40
  6. Step 6: Final answer
    x = 198,023.78

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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.