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Finding the Fourth Proportional to 279,945.80, 419,792.30 and 80,220.52

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Solution

The fourth proportional to 279,945.80, 419,792.30 and 80,220.52 is: 120,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,945.80 : 419,792.30 = 80,220.52 : x
  2. Step 2: Convert to fraction form
    279,945.80/419,792.30 = 80,220.52/x
  3. Step 3: Cross multiply
    279,945.80x = 419,792.30 × 80,220.52
  4. Step 4: Simplify right side
    279,945.80x = 33,675,956,598.00
  5. Step 5: Solve for x
    x = 33,675,956,598.00/279,945.80
  6. Step 6: Final answer
    x = 120,294.56

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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.