Home / 219,890.20-329,835.30-131,243.80

Finding the Fourth Proportional to 219,890.20, 329,835.30 and 131,243.80

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Solution

The fourth proportional to 219,890.20, 329,835.30 and 131,243.80 is: 196,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,890.20 : 329,835.30 = 131,243.80 : x
  2. Step 2: Convert to fraction form
    219,890.20/329,835.30 = 131,243.80/x
  3. Step 3: Cross multiply
    219,890.20x = 329,835.30 × 131,243.80
  4. Step 4: Simplify right side
    219,890.20x = 43,288,838,146.14
  5. Step 5: Solve for x
    x = 43,288,838,146.14/219,890.20
  6. Step 6: Final answer
    x = 196,865.70

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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.