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Finding the Fourth Proportional to 220,600.40, 331,037.40 and 115,494.80

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Solution

The fourth proportional to 220,600.40, 331,037.40 and 115,494.80 is: 173,313.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,600.40 : 331,037.40 = 115,494.80 : x
  2. Step 2: Convert to fraction form
    220,600.40/331,037.40 = 115,494.80/x
  3. Step 3: Cross multiply
    220,600.40x = 331,037.40 × 115,494.80
  4. Step 4: Simplify right side
    220,600.40x = 38,233,098,305.52
  5. Step 5: Solve for x
    x = 38,233,098,305.52/220,600.40
  6. Step 6: Final answer
    x = 173,313.82

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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.