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Finding the Fourth Proportional to 439,610.80, 659,416.20 and 203,414.80

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Solution

The fourth proportional to 439,610.80, 659,416.20 and 203,414.80 is: 305,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,610.80 : 659,416.20 = 203,414.80 : x
  2. Step 2: Convert to fraction form
    439,610.80/659,416.20 = 203,414.80/x
  3. Step 3: Cross multiply
    439,610.80x = 659,416.20 × 203,414.80
  4. Step 4: Simplify right side
    439,610.80x = 134,135,014,439.76
  5. Step 5: Solve for x
    x = 134,135,014,439.76/439,610.80
  6. Step 6: Final answer
    x = 305,122.20

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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.