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Finding the Fourth Proportional to 253,086.64, 379,553.28 and 133,078.96

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Solution

The fourth proportional to 253,086.64, 379,553.28 and 133,078.96 is: 199,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,086.64 : 379,553.28 = 133,078.96 : x
  2. Step 2: Convert to fraction form
    253,086.64/379,553.28 = 133,078.96/x
  3. Step 3: Cross multiply
    253,086.64x = 379,553.28 × 133,078.96
  4. Step 4: Simplify right side
    253,086.64x = 50,510,555,766.99
  5. Step 5: Solve for x
    x = 50,510,555,766.99/253,086.64
  6. Step 6: Final answer
    x = 199,578.12

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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.