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Finding the Fourth Proportional to 439,728.75, 659,689.94 and 250,278.27

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Solution

The fourth proportional to 439,728.75, 659,689.94 and 250,278.27 is: 375,472.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,728.75 : 659,689.94 = 250,278.27 : x
  2. Step 2: Convert to fraction form
    439,728.75/659,689.94 = 250,278.27/x
  3. Step 3: Cross multiply
    439,728.75x = 659,689.94 × 250,278.27
  4. Step 4: Simplify right side
    439,728.75x = 165,106,056,919.60
  5. Step 5: Solve for x
    x = 165,106,056,919.60/439,728.75
  6. Step 6: Final answer
    x = 375,472.51

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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.