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Finding the Fourth Proportional to 279,620.60, 418,556.10 and 220,134.20

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Solution

The fourth proportional to 279,620.60, 418,556.10 and 220,134.20 is: 329,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,620.60 : 418,556.10 = 220,134.20 : x
  2. Step 2: Convert to fraction form
    279,620.60/418,556.10 = 220,134.20/x
  3. Step 3: Cross multiply
    279,620.60x = 418,556.10 × 220,134.20
  4. Step 4: Simplify right side
    279,620.60x = 92,138,512,228.62
  5. Step 5: Solve for x
    x = 92,138,512,228.62/279,620.60
  6. Step 6: Final answer
    x = 329,512.60

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1.5x scale

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.