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Finding the Fourth Proportional to 217,842.60, 326,784.04 and 84,732.96

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Solution

The fourth proportional to 217,842.60, 326,784.04 and 84,732.96 is: 127,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,842.60 : 326,784.04 = 84,732.96 : x
  2. Step 2: Convert to fraction form
    217,842.60/326,784.04 = 84,732.96/x
  3. Step 3: Cross multiply
    217,842.60x = 326,784.04 × 84,732.96
  4. Step 4: Simplify right side
    217,842.60x = 27,689,378,989.96
  5. Step 5: Solve for x
    x = 27,689,378,989.96/217,842.60
  6. Step 6: Final answer
    x = 127,107.27

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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.