Home / 215,589.78-297,517.18-123,723.84

Finding the Fourth Proportional to 215,589.78, 297,517.18 and 123,723.84

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Solution

The fourth proportional to 215,589.78, 297,517.18 and 123,723.84 is: 170,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,589.78 : 297,517.18 = 123,723.84 : x
  2. Step 2: Convert to fraction form
    215,589.78/297,517.18 = 123,723.84/x
  3. Step 3: Cross multiply
    215,589.78x = 297,517.18 × 123,723.84
  4. Step 4: Simplify right side
    215,589.78x = 36,809,967,975.57
  5. Step 5: Solve for x
    x = 36,809,967,975.57/215,589.78
  6. Step 6: Final answer
    x = 170,740.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.