Home / 311,945.60-430,489.11-175,979.13

Finding the Fourth Proportional to 311,945.60, 430,489.11 and 175,979.13

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Solution

The fourth proportional to 311,945.60, 430,489.11 and 175,979.13 is: 242,853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,945.60 : 430,489.11 = 175,979.13 : x
  2. Step 2: Convert to fraction form
    311,945.60/430,489.11 = 175,979.13/x
  3. Step 3: Cross multiply
    311,945.60x = 430,489.11 × 175,979.13
  4. Step 4: Simplify right side
    311,945.60x = 75,757,099,052.27
  5. Step 5: Solve for x
    x = 75,757,099,052.27/311,945.60
  6. Step 6: Final answer
    x = 242,853.56

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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.