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Finding the Fourth Proportional to 298,620.20, 447,930.30 and 132,408.20

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Solution

The fourth proportional to 298,620.20, 447,930.30 and 132,408.20 is: 198,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,620.20 : 447,930.30 = 132,408.20 : x
  2. Step 2: Convert to fraction form
    298,620.20/447,930.30 = 132,408.20/x
  3. Step 3: Cross multiply
    298,620.20x = 447,930.30 × 132,408.20
  4. Step 4: Simplify right side
    298,620.20x = 59,309,644,748.46
  5. Step 5: Solve for x
    x = 59,309,644,748.46/298,620.20
  6. Step 6: Final answer
    x = 198,612.30

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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.