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Finding the Fourth Proportional to 275,134.17, 379,523.93 and 172,997.78

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Solution

The fourth proportional to 275,134.17, 379,523.93 and 172,997.78 is: 238,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,134.17 : 379,523.93 = 172,997.78 : x
  2. Step 2: Convert to fraction form
    275,134.17/379,523.93 = 172,997.78/x
  3. Step 3: Cross multiply
    275,134.17x = 379,523.93 × 172,997.78
  4. Step 4: Simplify right side
    275,134.17x = 65,656,795,557.38
  5. Step 5: Solve for x
    x = 65,656,795,557.38/275,134.17
  6. Step 6: Final answer
    x = 238,635.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.