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Finding the Fourth Proportional to 220,885.20, 331,500.60 and 102,571.20

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Solution

The fourth proportional to 220,885.20, 331,500.60 and 102,571.20 is: 153,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,885.20 : 331,500.60 = 102,571.20 : x
  2. Step 2: Convert to fraction form
    220,885.20/331,500.60 = 102,571.20/x
  3. Step 3: Cross multiply
    220,885.20x = 331,500.60 × 102,571.20
  4. Step 4: Simplify right side
    220,885.20x = 34,002,414,342.72
  5. Step 5: Solve for x
    x = 34,002,414,342.72/220,885.20
  6. Step 6: Final answer
    x = 153,937.04

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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.