Home / 278,721.78-419,942.13-252,098.46

Finding the Fourth Proportional to 278,721.78, 419,942.13 and 252,098.46

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Solution

The fourth proportional to 278,721.78, 419,942.13 and 252,098.46 is: 379,829.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,721.78 : 419,942.13 = 252,098.46 : x
  2. Step 2: Convert to fraction form
    278,721.78/419,942.13 = 252,098.46/x
  3. Step 3: Cross multiply
    278,721.78x = 419,942.13 × 252,098.46
  4. Step 4: Simplify right side
    278,721.78x = 105,866,764,262.12
  5. Step 5: Solve for x
    x = 105,866,764,262.12/278,721.78
  6. Step 6: Final answer
    x = 379,829.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.