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Finding the Fourth Proportional to 664,025.80, 995,909.10 and 220,793.80

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Solution

The fourth proportional to 664,025.80, 995,909.10 and 220,793.80 is: 331,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,025.80 : 995,909.10 = 220,793.80 : x
  2. Step 2: Convert to fraction form
    664,025.80/995,909.10 = 220,793.80/x
  3. Step 3: Cross multiply
    664,025.80x = 995,909.10 × 220,793.80
  4. Step 4: Simplify right side
    664,025.80x = 219,890,554,643.58
  5. Step 5: Solve for x
    x = 219,890,554,643.58/664,025.80
  6. Step 6: Final answer
    x = 331,147.61

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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.