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Finding the Fourth Proportional to 392,755.14, 541,987.92 and 240,048.90

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Solution

The fourth proportional to 392,755.14, 541,987.92 and 240,048.90 is: 331,258.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,755.14 : 541,987.92 = 240,048.90 : x
  2. Step 2: Convert to fraction form
    392,755.14/541,987.92 = 240,048.90/x
  3. Step 3: Cross multiply
    392,755.14x = 541,987.92 × 240,048.90
  4. Step 4: Simplify right side
    392,755.14x = 130,103,604,009.29
  5. Step 5: Solve for x
    x = 130,103,604,009.29/392,755.14
  6. Step 6: Final answer
    x = 331,258.82

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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.