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Finding the Fourth Proportional to 217,800.91, 326,785.88 and 84,774.61

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Solution

The fourth proportional to 217,800.91, 326,785.88 and 84,774.61 is: 127,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,800.91 : 326,785.88 = 84,774.61 : x
  2. Step 2: Convert to fraction form
    217,800.91/326,785.88 = 84,774.61/x
  3. Step 3: Cross multiply
    217,800.91x = 326,785.88 × 84,774.61
  4. Step 4: Simplify right side
    217,800.91x = 27,703,145,530.51
  5. Step 5: Solve for x
    x = 27,703,145,530.51/217,800.91
  6. Step 6: Final answer
    x = 127,194.81

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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.