Home / 392,731.04-541,989.96-231,680.36

Finding the Fourth Proportional to 392,731.04, 541,989.96 and 231,680.36

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Solution

The fourth proportional to 392,731.04, 541,989.96 and 231,680.36 is: 319,731.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,731.04 : 541,989.96 = 231,680.36 : x
  2. Step 2: Convert to fraction form
    392,731.04/541,989.96 = 231,680.36/x
  3. Step 3: Cross multiply
    392,731.04x = 541,989.96 × 231,680.36
  4. Step 4: Simplify right side
    392,731.04x = 125,568,429,049.19
  5. Step 5: Solve for x
    x = 125,568,429,049.19/392,731.04
  6. Step 6: Final answer
    x = 319,731.36

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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.