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Finding the Fourth Proportional to 392,356.86, 541,380.15 and 239,359.74

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Solution

The fourth proportional to 392,356.86, 541,380.15 and 239,359.74 is: 330,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,356.86 : 541,380.15 = 239,359.74 : x
  2. Step 2: Convert to fraction form
    392,356.86/541,380.15 = 239,359.74/x
  3. Step 3: Cross multiply
    392,356.86x = 541,380.15 × 239,359.74
  4. Step 4: Simplify right side
    392,356.86x = 129,584,611,945.16
  5. Step 5: Solve for x
    x = 129,584,611,945.16/392,356.86
  6. Step 6: Final answer
    x = 330,272.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.