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Finding the Fourth Proportional to 372,189.52, 557,839.52 and 135,254.80

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Solution

The fourth proportional to 372,189.52, 557,839.52 and 135,254.80 is: 202,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,189.52 : 557,839.52 = 135,254.80 : x
  2. Step 2: Convert to fraction form
    372,189.52/557,839.52 = 135,254.80/x
  3. Step 3: Cross multiply
    372,189.52x = 557,839.52 × 135,254.80
  4. Step 4: Simplify right side
    372,189.52x = 75,450,472,709.70
  5. Step 5: Solve for x
    x = 75,450,472,709.70/372,189.52
  6. Step 6: Final answer
    x = 202,720.57

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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.