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Finding the Fourth Proportional to 408,118.62, 612,179.40 and 123,811.62

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Solution

The fourth proportional to 408,118.62, 612,179.40 and 123,811.62 is: 185,717.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,118.62 : 612,179.40 = 123,811.62 : x
  2. Step 2: Convert to fraction form
    408,118.62/612,179.40 = 123,811.62/x
  3. Step 3: Cross multiply
    408,118.62x = 612,179.40 × 123,811.62
  4. Step 4: Simplify right side
    408,118.62x = 75,794,923,244.63
  5. Step 5: Solve for x
    x = 75,794,923,244.63/408,118.62
  6. Step 6: Final answer
    x = 185,717.88

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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.