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Finding the Fourth Proportional to 311,780.40, 466,979.40 and 124,695.60

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Solution

The fourth proportional to 311,780.40, 466,979.40 and 124,695.60 is: 186,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,780.40 : 466,979.40 = 124,695.60 : x
  2. Step 2: Convert to fraction form
    311,780.40/466,979.40 = 124,695.60/x
  3. Step 3: Cross multiply
    311,780.40x = 466,979.40 × 124,695.60
  4. Step 4: Simplify right side
    311,780.40x = 58,230,276,470.64
  5. Step 5: Solve for x
    x = 58,230,276,470.64/311,780.40
  6. Step 6: Final answer
    x = 186,766.96

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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.