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Finding the Fourth Proportional to 252,227.20, 378,340.80 and 211,676.80

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Solution

The fourth proportional to 252,227.20, 378,340.80 and 211,676.80 is: 317,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,227.20 : 378,340.80 = 211,676.80 : x
  2. Step 2: Convert to fraction form
    252,227.20/378,340.80 = 211,676.80/x
  3. Step 3: Cross multiply
    252,227.20x = 378,340.80 × 211,676.80
  4. Step 4: Simplify right side
    252,227.20x = 80,085,969,853.44
  5. Step 5: Solve for x
    x = 80,085,969,853.44/252,227.20
  6. Step 6: Final answer
    x = 317,515.20

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1.5x scale

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.