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Finding the Fourth Proportional to 379,857.87, 569,576.43 and 155,375.91

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Solution

The fourth proportional to 379,857.87, 569,576.43 and 155,375.91 is: 232,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,857.87 : 569,576.43 = 155,375.91 : x
  2. Step 2: Convert to fraction form
    379,857.87/569,576.43 = 155,375.91/x
  3. Step 3: Cross multiply
    379,857.87x = 569,576.43 × 155,375.91
  4. Step 4: Simplify right side
    379,857.87x = 88,498,456,125.80
  5. Step 5: Solve for x
    x = 88,498,456,125.80/379,857.87
  6. Step 6: Final answer
    x = 232,977.81

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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.