Home / 392,423.78-541,648.36-231,386.10

Finding the Fourth Proportional to 392,423.78, 541,648.36 and 231,386.10

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Solution

The fourth proportional to 392,423.78, 541,648.36 and 231,386.10 is: 319,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,423.78 : 541,648.36 = 231,386.10 : x
  2. Step 2: Convert to fraction form
    392,423.78/541,648.36 = 231,386.10/x
  3. Step 3: Cross multiply
    392,423.78x = 541,648.36 × 231,386.10
  4. Step 4: Simplify right side
    392,423.78x = 125,329,901,591.80
  5. Step 5: Solve for x
    x = 125,329,901,591.80/392,423.78
  6. Step 6: Final answer
    x = 319,373.87

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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.