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Finding the Fourth Proportional to 372,385.80, 558,523.35 and 135,673.29

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Solution

The fourth proportional to 372,385.80, 558,523.35 and 135,673.29 is: 203,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,385.80 : 558,523.35 = 135,673.29 : x
  2. Step 2: Convert to fraction form
    372,385.80/558,523.35 = 135,673.29/x
  3. Step 3: Cross multiply
    372,385.80x = 558,523.35 × 135,673.29
  4. Step 4: Simplify right side
    372,385.80x = 75,776,700,436.32
  5. Step 5: Solve for x
    x = 75,776,700,436.32/372,385.80
  6. Step 6: Final answer
    x = 203,489.77

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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.