Home / 320,200.20-480,170.70-109,729.80

Finding the Fourth Proportional to 320,200.20, 480,170.70 and 109,729.80

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Solution

The fourth proportional to 320,200.20, 480,170.70 and 109,729.80 is: 164,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,200.20 : 480,170.70 = 109,729.80 : x
  2. Step 2: Convert to fraction form
    320,200.20/480,170.70 = 109,729.80/x
  3. Step 3: Cross multiply
    320,200.20x = 480,170.70 × 109,729.80
  4. Step 4: Simplify right side
    320,200.20x = 52,689,034,876.86
  5. Step 5: Solve for x
    x = 52,689,034,876.86/320,200.20
  6. Step 6: Final answer
    x = 164,550.29

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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.