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Finding the Fourth Proportional to 392,002.20, 588,003.30 and 281,410.20

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Solution

The fourth proportional to 392,002.20, 588,003.30 and 281,410.20 is: 422,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,002.20 : 588,003.30 = 281,410.20 : x
  2. Step 2: Convert to fraction form
    392,002.20/588,003.30 = 281,410.20/x
  3. Step 3: Cross multiply
    392,002.20x = 588,003.30 × 281,410.20
  4. Step 4: Simplify right side
    392,002.20x = 165,470,126,253.66
  5. Step 5: Solve for x
    x = 165,470,126,253.66/392,002.20
  6. Step 6: Final answer
    x = 422,115.30

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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.