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Finding the Fourth Proportional to 408,195.88, 612,282.50 and 108,679.04

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Solution

The fourth proportional to 408,195.88, 612,282.50 and 108,679.04 is: 163,015.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,195.88 : 612,282.50 = 108,679.04 : x
  2. Step 2: Convert to fraction form
    408,195.88/612,282.50 = 108,679.04/x
  3. Step 3: Cross multiply
    408,195.88x = 612,282.50 × 108,679.04
  4. Step 4: Simplify right side
    408,195.88x = 66,542,274,308.80
  5. Step 5: Solve for x
    x = 66,542,274,308.80/408,195.88
  6. Step 6: Final answer
    x = 163,015.55

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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.