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Finding the Fourth Proportional to 379,255.80, 568,879.80 and 219,229.91

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Solution

The fourth proportional to 379,255.80, 568,879.80 and 219,229.91 is: 328,842.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,255.80 : 568,879.80 = 219,229.91 : x
  2. Step 2: Convert to fraction form
    379,255.80/568,879.80 = 219,229.91/x
  3. Step 3: Cross multiply
    379,255.80x = 568,879.80 × 219,229.91
  4. Step 4: Simplify right side
    379,255.80x = 124,715,467,406.95
  5. Step 5: Solve for x
    x = 124,715,467,406.95/379,255.80
  6. Step 6: Final answer
    x = 328,842.61

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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.