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Finding the Fourth Proportional to 279,771.77, 419,647.23 and 80,091.79

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Solution

The fourth proportional to 279,771.77, 419,647.23 and 80,091.79 is: 120,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,771.77 : 419,647.23 = 80,091.79 : x
  2. Step 2: Convert to fraction form
    279,771.77/419,647.23 = 80,091.79/x
  3. Step 3: Cross multiply
    279,771.77x = 419,647.23 × 80,091.79
  4. Step 4: Simplify right side
    279,771.77x = 33,610,296,770.12
  5. Step 5: Solve for x
    x = 33,610,296,770.12/279,771.77
  6. Step 6: Final answer
    x = 120,134.70

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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.