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Finding the Fourth Proportional to 350,691.20, 525,997.76 and 137,456

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Solution

The fourth proportional to 350,691.20, 525,997.76 and 137,456 is: 206,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,691.20 : 525,997.76 = 137,456 : x
  2. Step 2: Convert to fraction form
    350,691.20/525,997.76 = 137,456/x
  3. Step 3: Cross multiply
    350,691.20x = 525,997.76 × 137,456
  4. Step 4: Simplify right side
    350,691.20x = 72,301,548,098.56
  5. Step 5: Solve for x
    x = 72,301,548,098.56/350,691.20
  6. Step 6: Final answer
    x = 206,168.70

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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.