Home / 279,938.18-419,979.66-80,273.18

Finding the Fourth Proportional to 279,938.18, 419,979.66 and 80,273.18

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Solution

The fourth proportional to 279,938.18, 419,979.66 and 80,273.18 is: 120,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938.18 : 419,979.66 = 80,273.18 : x
  2. Step 2: Convert to fraction form
    279,938.18/419,979.66 = 80,273.18/x
  3. Step 3: Cross multiply
    279,938.18x = 419,979.66 × 80,273.18
  4. Step 4: Simplify right side
    279,938.18x = 33,713,102,843.52
  5. Step 5: Solve for x
    x = 33,713,102,843.52/279,938.18
  6. Step 6: Final answer
    x = 120,430.53

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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.