Home / 278,839.20-418,260.20-68,477.16

Finding the Fourth Proportional to 278,839.20, 418,260.20 and 68,477.16

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Solution

The fourth proportional to 278,839.20, 418,260.20 and 68,477.16 is: 102,716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,839.20 : 418,260.20 = 68,477.16 : x
  2. Step 2: Convert to fraction form
    278,839.20/418,260.20 = 68,477.16/x
  3. Step 3: Cross multiply
    278,839.20x = 418,260.20 × 68,477.16
  4. Step 4: Simplify right side
    278,839.20x = 28,641,270,294.65
  5. Step 5: Solve for x
    x = 28,641,270,294.65/278,839.20
  6. Step 6: Final answer
    x = 102,716.08

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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.