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Finding the Fourth Proportional to 457,115.17, 686,115.01 and 220,624.33

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Solution

The fourth proportional to 457,115.17, 686,115.01 and 220,624.33 is: 331,149.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,115.17 : 686,115.01 = 220,624.33 : x
  2. Step 2: Convert to fraction form
    457,115.17/686,115.01 = 220,624.33/x
  3. Step 3: Cross multiply
    457,115.17x = 686,115.01 × 220,624.33
  4. Step 4: Simplify right side
    457,115.17x = 151,373,660,402.06
  5. Step 5: Solve for x
    x = 151,373,660,402.06/457,115.17
  6. Step 6: Final answer
    x = 331,149.94

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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.