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Finding the Fourth Proportional to 408,247.38, 612,371.88 and 123,940.26

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Solution

The fourth proportional to 408,247.38, 612,371.88 and 123,940.26 is: 185,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,247.38 : 612,371.88 = 123,940.26 : x
  2. Step 2: Convert to fraction form
    408,247.38/612,371.88 = 123,940.26/x
  3. Step 3: Cross multiply
    408,247.38x = 612,371.88 × 123,940.26
  4. Step 4: Simplify right side
    408,247.38x = 75,897,530,023.89
  5. Step 5: Solve for x
    x = 75,897,530,023.89/408,247.38
  6. Step 6: Final answer
    x = 185,910.64

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1.5x scale

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.