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Finding the Fourth Proportional to 217,874.78, 326,686.41 and 84,599.30

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Solution

The fourth proportional to 217,874.78, 326,686.41 and 84,599.30 is: 126,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,874.78 : 326,686.41 = 84,599.30 : x
  2. Step 2: Convert to fraction form
    217,874.78/326,686.41 = 84,599.30/x
  3. Step 3: Cross multiply
    217,874.78x = 326,686.41 × 84,599.30
  4. Step 4: Simplify right side
    217,874.78x = 27,637,439,972.08
  5. Step 5: Solve for x
    x = 27,637,439,972.08/217,874.78
  6. Step 6: Final answer
    x = 126,850.11

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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.