Home / 213,960.60-320,819.40-80,845.20

Finding the Fourth Proportional to 213,960.60, 320,819.40 and 80,845.20

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Solution

The fourth proportional to 213,960.60, 320,819.40 and 80,845.20 is: 121,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,960.60 : 320,819.40 = 80,845.20 : x
  2. Step 2: Convert to fraction form
    213,960.60/320,819.40 = 80,845.20/x
  3. Step 3: Cross multiply
    213,960.60x = 320,819.40 × 80,845.20
  4. Step 4: Simplify right side
    213,960.60x = 25,936,708,556.88
  5. Step 5: Solve for x
    x = 25,936,708,556.88/213,960.60
  6. Step 6: Final answer
    x = 121,221.89

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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.