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Finding the Fourth Proportional to 300,786.54, 451,236.72 and 120,885.95

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Solution

The fourth proportional to 300,786.54, 451,236.72 and 120,885.95 is: 181,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,786.54 : 451,236.72 = 120,885.95 : x
  2. Step 2: Convert to fraction form
    300,786.54/451,236.72 = 120,885.95/x
  3. Step 3: Cross multiply
    300,786.54x = 451,236.72 × 120,885.95
  4. Step 4: Simplify right side
    300,786.54x = 54,548,179,572.08
  5. Step 5: Solve for x
    x = 54,548,179,572.08/300,786.54
  6. Step 6: Final answer
    x = 181,351.80

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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.