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Finding the Fourth Proportional to 253,549.90, 379,772.17 and 126,969.38

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Solution

The fourth proportional to 253,549.90, 379,772.17 and 126,969.38 is: 190,177.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,549.90 : 379,772.17 = 126,969.38 : x
  2. Step 2: Convert to fraction form
    253,549.90/379,772.17 = 126,969.38/x
  3. Step 3: Cross multiply
    253,549.90x = 379,772.17 × 126,969.38
  4. Step 4: Simplify right side
    253,549.90x = 48,219,436,966.15
  5. Step 5: Solve for x
    x = 48,219,436,966.15/253,549.90
  6. Step 6: Final answer
    x = 190,177.31

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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.