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Finding the Fourth Proportional to 330,371.81, 455,874.42 and 194,375.85

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Solution

The fourth proportional to 330,371.81, 455,874.42 and 194,375.85 is: 268,215.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,371.81 : 455,874.42 = 194,375.85 : x
  2. Step 2: Convert to fraction form
    330,371.81/455,874.42 = 194,375.85/x
  3. Step 3: Cross multiply
    330,371.81x = 455,874.42 × 194,375.85
  4. Step 4: Simplify right side
    330,371.81x = 88,610,978,609.67
  5. Step 5: Solve for x
    x = 88,610,978,609.67/330,371.81
  6. Step 6: Final answer
    x = 268,215.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.