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Finding the Fourth Proportional to 217,705.66, 326,682.86 and 84,568.59

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Solution

The fourth proportional to 217,705.66, 326,682.86 and 84,568.59 is: 126,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,705.66 : 326,682.86 = 84,568.59 : x
  2. Step 2: Convert to fraction form
    217,705.66/326,682.86 = 84,568.59/x
  3. Step 3: Cross multiply
    217,705.66x = 326,682.86 × 84,568.59
  4. Step 4: Simplify right side
    217,705.66x = 27,627,108,424.52
  5. Step 5: Solve for x
    x = 27,627,108,424.52/217,705.66
  6. Step 6: Final answer
    x = 126,901.20

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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.