Home / 279,869.06-419,801.27-80,189.62

Finding the Fourth Proportional to 279,869.06, 419,801.27 and 80,189.62

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Solution

The fourth proportional to 279,869.06, 419,801.27 and 80,189.62 is: 120,283.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,869.06 : 419,801.27 = 80,189.62 : x
  2. Step 2: Convert to fraction form
    279,869.06/419,801.27 = 80,189.62/x
  3. Step 3: Cross multiply
    279,869.06x = 419,801.27 × 80,189.62
  4. Step 4: Simplify right side
    279,869.06x = 33,663,702,866.37
  5. Step 5: Solve for x
    x = 33,663,702,866.37/279,869.06
  6. Step 6: Final answer
    x = 120,283.76

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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.