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Finding the Fourth Proportional to 439,517.26, 659,057.80 and 139,958.81

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Solution

The fourth proportional to 439,517.26, 659,057.80 and 139,958.81 is: 209,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,517.26 : 659,057.80 = 139,958.81 : x
  2. Step 2: Convert to fraction form
    439,517.26/659,057.80 = 139,958.81/x
  3. Step 3: Cross multiply
    439,517.26x = 659,057.80 × 139,958.81
  4. Step 4: Simplify right side
    439,517.26x = 92,240,944,709.42
  5. Step 5: Solve for x
    x = 92,240,944,709.42/439,517.26
  6. Step 6: Final answer
    x = 209,868.77

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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.