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Finding the Fourth Proportional to 276,553.91, 414,959.97 and 143,361.52

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Solution

The fourth proportional to 276,553.91, 414,959.97 and 143,361.52 is: 215,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,553.91 : 414,959.97 = 143,361.52 : x
  2. Step 2: Convert to fraction form
    276,553.91/414,959.97 = 143,361.52/x
  3. Step 3: Cross multiply
    276,553.91x = 414,959.97 × 143,361.52
  4. Step 4: Simplify right side
    276,553.91x = 59,489,289,963.55
  5. Step 5: Solve for x
    x = 59,489,289,963.55/276,553.91
  6. Step 6: Final answer
    x = 215,109.20

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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.