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Finding the Fourth Proportional to 439,818.20, 659,640.90 and 144,330.20

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Solution

The fourth proportional to 439,818.20, 659,640.90 and 144,330.20 is: 216,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,818.20 : 659,640.90 = 144,330.20 : x
  2. Step 2: Convert to fraction form
    439,818.20/659,640.90 = 144,330.20/x
  3. Step 3: Cross multiply
    439,818.20x = 659,640.90 × 144,330.20
  4. Step 4: Simplify right side
    439,818.20x = 95,206,103,025.18
  5. Step 5: Solve for x
    x = 95,206,103,025.18/439,818.20
  6. Step 6: Final answer
    x = 216,466.95

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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.