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Finding the Fourth Proportional to 238,125.58, 356,939.97 and 80,299.78

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Solution

The fourth proportional to 238,125.58, 356,939.97 and 80,299.78 is: 120,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,125.58 : 356,939.97 = 80,299.78 : x
  2. Step 2: Convert to fraction form
    238,125.58/356,939.97 = 80,299.78/x
  3. Step 3: Cross multiply
    238,125.58x = 356,939.97 × 80,299.78
  4. Step 4: Simplify right side
    238,125.58x = 28,662,201,064.21
  5. Step 5: Solve for x
    x = 28,662,201,064.21/238,125.58
  6. Step 6: Final answer
    x = 120,365.91

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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.