Home / 392,739.30-541,961.28-222,969.78

Finding the Fourth Proportional to 392,739.30, 541,961.28 and 222,969.78

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Solution

The fourth proportional to 392,739.30, 541,961.28 and 222,969.78 is: 307,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,739.30 : 541,961.28 = 222,969.78 : x
  2. Step 2: Convert to fraction form
    392,739.30/541,961.28 = 222,969.78/x
  3. Step 3: Cross multiply
    392,739.30x = 541,961.28 × 222,969.78
  4. Step 4: Simplify right side
    392,739.30x = 120,840,987,370.12
  5. Step 5: Solve for x
    x = 120,840,987,370.12/392,739.30
  6. Step 6: Final answer
    x = 307,687.54

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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.