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Finding the Fourth Proportional to 194,381.78, 268,255.13 and 108,340.88

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Solution

The fourth proportional to 194,381.78, 268,255.13 and 108,340.88 is: 149,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,381.78 : 268,255.13 = 108,340.88 : x
  2. Step 2: Convert to fraction form
    194,381.78/268,255.13 = 108,340.88/x
  3. Step 3: Cross multiply
    194,381.78x = 268,255.13 × 108,340.88
  4. Step 4: Simplify right side
    194,381.78x = 29,062,994,965.73
  5. Step 5: Solve for x
    x = 29,062,994,965.73/194,381.78
  6. Step 6: Final answer
    x = 149,515.02

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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.