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Finding the Fourth Proportional to 392,853.53, 542,123.52 and 240,147.47

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Solution

The fourth proportional to 392,853.53, 542,123.52 and 240,147.47 is: 331,394.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,853.53 : 542,123.52 = 240,147.47 : x
  2. Step 2: Convert to fraction form
    392,853.53/542,123.52 = 240,147.47/x
  3. Step 3: Cross multiply
    392,853.53x = 542,123.52 × 240,147.47
  4. Step 4: Simplify right side
    392,853.53x = 130,189,591,755.49
  5. Step 5: Solve for x
    x = 130,189,591,755.49/392,853.53
  6. Step 6: Final answer
    x = 331,394.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.