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Finding the Fourth Proportional to 392,381.73, 541,504.58 and 231,243.57

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Solution

The fourth proportional to 392,381.73, 541,504.58 and 231,243.57 is: 319,126.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,381.73 : 541,504.58 = 231,243.57 : x
  2. Step 2: Convert to fraction form
    392,381.73/541,504.58 = 231,243.57/x
  3. Step 3: Cross multiply
    392,381.73x = 541,504.58 × 231,243.57
  4. Step 4: Simplify right side
    392,381.73x = 125,219,451,094.33
  5. Step 5: Solve for x
    x = 125,219,451,094.33/392,381.73
  6. Step 6: Final answer
    x = 319,126.61

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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.