Home / 279,943.74-419,936.67-80,262.54

Finding the Fourth Proportional to 279,943.74, 419,936.67 and 80,262.54

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Solution

The fourth proportional to 279,943.74, 419,936.67 and 80,262.54 is: 120,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,943.74 : 419,936.67 = 80,262.54 : x
  2. Step 2: Convert to fraction form
    279,943.74/419,936.67 = 80,262.54/x
  3. Step 3: Cross multiply
    279,943.74x = 419,936.67 × 80,262.54
  4. Step 4: Simplify right side
    279,943.74x = 33,705,183,773.34
  5. Step 5: Solve for x
    x = 33,705,183,773.34/279,943.74
  6. Step 6: Final answer
    x = 120,399.85

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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.