Home / 321,144.24-443,178.96-177,913.56

Finding the Fourth Proportional to 321,144.24, 443,178.96 and 177,913.56

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Solution

The fourth proportional to 321,144.24, 443,178.96 and 177,913.56 is: 245,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,144.24 : 443,178.96 = 177,913.56 : x
  2. Step 2: Convert to fraction form
    321,144.24/443,178.96 = 177,913.56/x
  3. Step 3: Cross multiply
    321,144.24x = 443,178.96 × 177,913.56
  4. Step 4: Simplify right side
    321,144.24x = 78,847,546,490.70
  5. Step 5: Solve for x
    x = 78,847,546,490.70/321,144.24
  6. Step 6: Final answer
    x = 245,520.66

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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.