Home / 217,834.60-326,687.10-84,638.20

Finding the Fourth Proportional to 217,834.60, 326,687.10 and 84,638.20

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Solution

The fourth proportional to 217,834.60, 326,687.10 and 84,638.20 is: 126,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,834.60 : 326,687.10 = 84,638.20 : x
  2. Step 2: Convert to fraction form
    217,834.60/326,687.10 = 84,638.20/x
  3. Step 3: Cross multiply
    217,834.60x = 326,687.10 × 84,638.20
  4. Step 4: Simplify right side
    217,834.60x = 27,650,208,107.22
  5. Step 5: Solve for x
    x = 27,650,208,107.22/217,834.60
  6. Step 6: Final answer
    x = 126,932.12

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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.