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Finding the Fourth Proportional to 379,013.85, 568,029.11 and 154,112.49

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Solution

The fourth proportional to 379,013.85, 568,029.11 and 154,112.49 is: 230,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,013.85 : 568,029.11 = 154,112.49 : x
  2. Step 2: Convert to fraction form
    379,013.85/568,029.11 = 154,112.49/x
  3. Step 3: Cross multiply
    379,013.85x = 568,029.11 × 154,112.49
  4. Step 4: Simplify right side
    379,013.85x = 87,540,379,764.02
  5. Step 5: Solve for x
    x = 87,540,379,764.02/379,013.85
  6. Step 6: Final answer
    x = 230,968.81

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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.