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Finding the Fourth Proportional to 203,158.64, 304,780.90 and 60,998.78

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Solution

The fourth proportional to 203,158.64, 304,780.90 and 60,998.78 is: 91,511.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,158.64 : 304,780.90 = 60,998.78 : x
  2. Step 2: Convert to fraction form
    203,158.64/304,780.90 = 60,998.78/x
  3. Step 3: Cross multiply
    203,158.64x = 304,780.90 × 60,998.78
  4. Step 4: Simplify right side
    203,158.64x = 18,591,263,067.30
  5. Step 5: Solve for x
    x = 18,591,263,067.30/203,158.64
  6. Step 6: Final answer
    x = 91,511.06

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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.