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Finding the Fourth Proportional to 311,940.40, 467,680.20 and 124,855.60

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Solution

The fourth proportional to 311,940.40, 467,680.20 and 124,855.60 is: 187,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,940.40 : 467,680.20 = 124,855.60 : x
  2. Step 2: Convert to fraction form
    311,940.40/467,680.20 = 124,855.60/x
  3. Step 3: Cross multiply
    311,940.40x = 467,680.20 × 124,855.60
  4. Step 4: Simplify right side
    311,940.40x = 58,392,491,979.12
  5. Step 5: Solve for x
    x = 58,392,491,979.12/311,940.40
  6. Step 6: Final answer
    x = 187,191.18

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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.