Home / 311,895.25-430,414.92-175,928.78

Finding the Fourth Proportional to 311,895.25, 430,414.92 and 175,928.78

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Solution

The fourth proportional to 311,895.25, 430,414.92 and 175,928.78 is: 242,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,895.25 : 430,414.92 = 175,928.78 : x
  2. Step 2: Convert to fraction form
    311,895.25/430,414.92 = 175,928.78/x
  3. Step 3: Cross multiply
    311,895.25x = 430,414.92 × 175,928.78
  4. Step 4: Simplify right side
    311,895.25x = 75,722,372,845.43
  5. Step 5: Solve for x
    x = 75,722,372,845.43/311,895.25
  6. Step 6: Final answer
    x = 242,781.43

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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.