Home / 278,812.20-418,226.49-68,450.13

Finding the Fourth Proportional to 278,812.20, 418,226.49 and 68,450.13

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Solution

The fourth proportional to 278,812.20, 418,226.49 and 68,450.13 is: 102,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,812.20 : 418,226.49 = 68,450.13 : x
  2. Step 2: Convert to fraction form
    278,812.20/418,226.49 = 68,450.13/x
  3. Step 3: Cross multiply
    278,812.20x = 418,226.49 × 68,450.13
  4. Step 4: Simplify right side
    278,812.20x = 28,627,657,609.94
  5. Step 5: Solve for x
    x = 28,627,657,609.94/278,812.20
  6. Step 6: Final answer
    x = 102,677.21

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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.