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Finding the Fourth Proportional to 215,493, 323,239.27 and 57,717.15

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Solution

The fourth proportional to 215,493, 323,239.27 and 57,717.15 is: 86,575.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,493 : 323,239.27 = 57,717.15 : x
  2. Step 2: Convert to fraction form
    215,493/323,239.27 = 57,717.15/x
  3. Step 3: Cross multiply
    215,493x = 323,239.27 × 57,717.15
  4. Step 4: Simplify right side
    215,493x = 18,656,449,432.48
  5. Step 5: Solve for x
    x = 18,656,449,432.48/215,493
  6. Step 6: Final answer
    x = 86,575.66

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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.