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Finding the Fourth Proportional to 323,144.88, 445,872.34 and 187,129.88

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Solution

The fourth proportional to 323,144.88, 445,872.34 and 187,129.88 is: 258,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,144.88 : 445,872.34 = 187,129.88 : x
  2. Step 2: Convert to fraction form
    323,144.88/445,872.34 = 187,129.88/x
  3. Step 3: Cross multiply
    323,144.88x = 445,872.34 × 187,129.88
  4. Step 4: Simplify right side
    323,144.88x = 83,436,037,479.52
  5. Step 5: Solve for x
    x = 83,436,037,479.52/323,144.88
  6. Step 6: Final answer
    x = 258,200.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.