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Finding the Fourth Proportional to 217,781.70, 326,588.22 and 84,644.52

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Solution

The fourth proportional to 217,781.70, 326,588.22 and 84,644.52 is: 126,934.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,781.70 : 326,588.22 = 84,644.52 : x
  2. Step 2: Convert to fraction form
    217,781.70/326,588.22 = 84,644.52/x
  3. Step 3: Cross multiply
    217,781.70x = 326,588.22 × 84,644.52
  4. Step 4: Simplify right side
    217,781.70x = 27,643,903,119.55
  5. Step 5: Solve for x
    x = 27,643,903,119.55/217,781.70
  6. Step 6: Final answer
    x = 126,934.00

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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.