Home / 219,821.40-329,732.10-131,247.90

Finding the Fourth Proportional to 219,821.40, 329,732.10 and 131,247.90

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Solution

The fourth proportional to 219,821.40, 329,732.10 and 131,247.90 is: 196,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,821.40 : 329,732.10 = 131,247.90 : x
  2. Step 2: Convert to fraction form
    219,821.40/329,732.10 = 131,247.90/x
  3. Step 3: Cross multiply
    219,821.40x = 329,732.10 × 131,247.90
  4. Step 4: Simplify right side
    219,821.40x = 43,276,645,687.59
  5. Step 5: Solve for x
    x = 43,276,645,687.59/219,821.40
  6. Step 6: Final answer
    x = 196,871.85

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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.