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Finding the Fourth Proportional to 252,896.78, 379,557.99 and 126,499.11

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Solution

The fourth proportional to 252,896.78, 379,557.99 and 126,499.11 is: 189,855.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,896.78 : 379,557.99 = 126,499.11 : x
  2. Step 2: Convert to fraction form
    252,896.78/379,557.99 = 126,499.11/x
  3. Step 3: Cross multiply
    252,896.78x = 379,557.99 × 126,499.11
  4. Step 4: Simplify right side
    252,896.78x = 48,013,747,928.39
  5. Step 5: Solve for x
    x = 48,013,747,928.39/252,896.78
  6. Step 6: Final answer
    x = 189,855.12

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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.