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Finding the Fourth Proportional to 220,839.20, 331,264.22 and 80,597.80

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Solution

The fourth proportional to 220,839.20, 331,264.22 and 80,597.80 is: 120,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,839.20 : 331,264.22 = 80,597.80 : x
  2. Step 2: Convert to fraction form
    220,839.20/331,264.22 = 80,597.80/x
  3. Step 3: Cross multiply
    220,839.20x = 331,264.22 × 80,597.80
  4. Step 4: Simplify right side
    220,839.20x = 26,699,167,350.72
  5. Step 5: Solve for x
    x = 26,699,167,350.72/220,839.20
  6. Step 6: Final answer
    x = 120,898.68

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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.