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Finding the Fourth Proportional to 379,255.10, 568,692.20 and 126,446.10

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Solution

The fourth proportional to 379,255.10, 568,692.20 and 126,446.10 is: 189,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,255.10 : 568,692.20 = 126,446.10 : x
  2. Step 2: Convert to fraction form
    379,255.10/568,692.20 = 126,446.10/x
  3. Step 3: Cross multiply
    379,255.10x = 568,692.20 × 126,446.10
  4. Step 4: Simplify right side
    379,255.10x = 71,908,910,158.19
  5. Step 5: Solve for x
    x = 71,908,910,158.19/379,255.10
  6. Step 6: Final answer
    x = 189,605.65

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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.