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Finding the Fourth Proportional to 379,000.32, 568,310.31 and 126,191.76

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Solution

The fourth proportional to 379,000.32, 568,310.31 and 126,191.76 is: 189,224.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,000.32 : 568,310.31 = 126,191.76 : x
  2. Step 2: Convert to fraction form
    379,000.32/568,310.31 = 126,191.76/x
  3. Step 3: Cross multiply
    379,000.32x = 568,310.31 × 126,191.76
  4. Step 4: Simplify right side
    379,000.32x = 71,716,078,245.05
  5. Step 5: Solve for x
    x = 71,716,078,245.05/379,000.32
  6. Step 6: Final answer
    x = 189,224.32

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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.