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Finding the Fourth Proportional to 439,605.55, 659,401.12 and 140,082.04

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Solution

The fourth proportional to 439,605.55, 659,401.12 and 140,082.04 is: 210,120.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,605.55 : 659,401.12 = 140,082.04 : x
  2. Step 2: Convert to fraction form
    439,605.55/659,401.12 = 140,082.04/x
  3. Step 3: Cross multiply
    439,605.55x = 659,401.12 × 140,082.04
  4. Step 4: Simplify right side
    439,605.55x = 92,370,254,067.88
  5. Step 5: Solve for x
    x = 92,370,254,067.88/439,605.55
  6. Step 6: Final answer
    x = 210,120.76

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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.