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Finding the Fourth Proportional to 377,387.40, 565,961.13 and 124,620.78

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Solution

The fourth proportional to 377,387.40, 565,961.13 and 124,620.78 is: 186,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,387.40 : 565,961.13 = 124,620.78 : x
  2. Step 2: Convert to fraction form
    377,387.40/565,961.13 = 124,620.78/x
  3. Step 3: Cross multiply
    377,387.40x = 565,961.13 × 124,620.78
  4. Step 4: Simplify right side
    377,387.40x = 70,530,517,470.28
  5. Step 5: Solve for x
    x = 70,530,517,470.28/377,387.40
  6. Step 6: Final answer
    x = 186,891.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.