Home / 392,839.20-542,118.78-223,073.28

Finding the Fourth Proportional to 392,839.20, 542,118.78 and 223,073.28

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Solution

The fourth proportional to 392,839.20, 542,118.78 and 223,073.28 is: 307,841.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,839.20 : 542,118.78 = 223,073.28 : x
  2. Step 2: Convert to fraction form
    392,839.20/542,118.78 = 223,073.28/x
  3. Step 3: Cross multiply
    392,839.20x = 542,118.78 × 223,073.28
  4. Step 4: Simplify right side
    392,839.20x = 120,932,214,404.20
  5. Step 5: Solve for x
    x = 120,932,214,404.20/392,839.20
  6. Step 6: Final answer
    x = 307,841.51

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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.