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Finding the Fourth Proportional to 220,744.80, 331,123.28 and 80,607.84

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Solution

The fourth proportional to 220,744.80, 331,123.28 and 80,607.84 is: 120,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,744.80 : 331,123.28 = 80,607.84 : x
  2. Step 2: Convert to fraction form
    220,744.80/331,123.28 = 80,607.84/x
  3. Step 3: Cross multiply
    220,744.80x = 331,123.28 × 80,607.84
  4. Step 4: Simplify right side
    220,744.80x = 26,691,132,374.52
  5. Step 5: Solve for x
    x = 26,691,132,374.52/220,744.80
  6. Step 6: Final answer
    x = 120,913.98

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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.