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Finding the Fourth Proportional to 408,073.40, 612,110.10 and 324,092.60

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Solution

The fourth proportional to 408,073.40, 612,110.10 and 324,092.60 is: 486,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,073.40 : 612,110.10 = 324,092.60 : x
  2. Step 2: Convert to fraction form
    408,073.40/612,110.10 = 324,092.60/x
  3. Step 3: Cross multiply
    408,073.40x = 612,110.10 × 324,092.60
  4. Step 4: Simplify right side
    408,073.40x = 198,380,353,795.26
  5. Step 5: Solve for x
    x = 198,380,353,795.26/408,073.40
  6. Step 6: Final answer
    x = 486,138.90

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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.