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Finding the Fourth Proportional to 443,340.44, 665,104.12 and 143,797.72

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Solution

The fourth proportional to 443,340.44, 665,104.12 and 143,797.72 is: 215,726.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,340.44 : 665,104.12 = 143,797.72 : x
  2. Step 2: Convert to fraction form
    443,340.44/665,104.12 = 143,797.72/x
  3. Step 3: Cross multiply
    443,340.44x = 665,104.12 × 143,797.72
  4. Step 4: Simplify right side
    443,340.44x = 95,640,456,018.61
  5. Step 5: Solve for x
    x = 95,640,456,018.61/443,340.44
  6. Step 6: Final answer
    x = 215,726.89

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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.