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Finding the Fourth Proportional to 408,149.44, 612,223.28 and 108,630

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Solution

The fourth proportional to 408,149.44, 612,223.28 and 108,630 is: 162,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,149.44 : 612,223.28 = 108,630 : x
  2. Step 2: Convert to fraction form
    408,149.44/612,223.28 = 108,630/x
  3. Step 3: Cross multiply
    408,149.44x = 612,223.28 × 108,630
  4. Step 4: Simplify right side
    408,149.44x = 66,505,814,906.40
  5. Step 5: Solve for x
    x = 66,505,814,906.40/408,149.44
  6. Step 6: Final answer
    x = 162,944.77

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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.