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Finding the Fourth Proportional to 408,144.17, 612,221.37 and 108,622.90

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Solution

The fourth proportional to 408,144.17, 612,221.37 and 108,622.90 is: 162,935.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,144.17 : 612,221.37 = 108,622.90 : x
  2. Step 2: Convert to fraction form
    408,144.17/612,221.37 = 108,622.90/x
  3. Step 3: Cross multiply
    408,144.17x = 612,221.37 × 108,622.90
  4. Step 4: Simplify right side
    408,144.17x = 66,501,257,590.27
  5. Step 5: Solve for x
    x = 66,501,257,590.27/408,144.17
  6. Step 6: Final answer
    x = 162,935.71

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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.