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Finding the Fourth Proportional to 408,103.62, 612,156.87 and 123,796.64

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Solution

The fourth proportional to 408,103.62, 612,156.87 and 123,796.64 is: 185,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,103.62 : 612,156.87 = 123,796.64 : x
  2. Step 2: Convert to fraction form
    408,103.62/612,156.87 = 123,796.64/x
  3. Step 3: Cross multiply
    408,103.62x = 612,156.87 × 123,796.64
  4. Step 4: Simplify right side
    408,103.62x = 75,782,960,598.13
  5. Step 5: Solve for x
    x = 75,782,960,598.13/408,103.62
  6. Step 6: Final answer
    x = 185,695.39

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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.