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Finding the Fourth Proportional to 547,279.20, 820,918.80 and 252,367.20

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Solution

The fourth proportional to 547,279.20, 820,918.80 and 252,367.20 is: 378,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,279.20 : 820,918.80 = 252,367.20 : x
  2. Step 2: Convert to fraction form
    547,279.20/820,918.80 = 252,367.20/x
  3. Step 3: Cross multiply
    547,279.20x = 820,918.80 × 252,367.20
  4. Step 4: Simplify right side
    547,279.20x = 207,172,978,983.36
  5. Step 5: Solve for x
    x = 207,172,978,983.36/547,279.20
  6. Step 6: Final answer
    x = 378,550.80

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Similar ratio
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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.