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Finding the Fourth Proportional to 253,131.97, 379,641.99 and 73,178.32

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Solution

The fourth proportional to 253,131.97, 379,641.99 and 73,178.32 is: 109,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,131.97 : 379,641.99 = 73,178.32 : x
  2. Step 2: Convert to fraction form
    253,131.97/379,641.99 = 73,178.32/x
  3. Step 3: Cross multiply
    253,131.97x = 379,641.99 × 73,178.32
  4. Step 4: Simplify right side
    253,131.97x = 27,781,561,131.45
  5. Step 5: Solve for x
    x = 27,781,561,131.45/253,131.97
  6. Step 6: Final answer
    x = 109,751.30

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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.