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Finding the Fourth Proportional to 392,308.38, 541,380.51 and 231,170.22

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Solution

The fourth proportional to 392,308.38, 541,380.51 and 231,170.22 is: 319,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,308.38 : 541,380.51 = 231,170.22 : x
  2. Step 2: Convert to fraction form
    392,308.38/541,380.51 = 231,170.22/x
  3. Step 3: Cross multiply
    392,308.38x = 541,380.51 × 231,170.22
  4. Step 4: Simplify right side
    392,308.38x = 125,151,051,600.41
  5. Step 5: Solve for x
    x = 125,151,051,600.41/392,308.38
  6. Step 6: Final answer
    x = 319,011.93

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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.