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Finding the Fourth Proportional to 547,546.40, 820,930.80 and 210,456.80

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Solution

The fourth proportional to 547,546.40, 820,930.80 and 210,456.80 is: 315,535.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,546.40 : 820,930.80 = 210,456.80 : x
  2. Step 2: Convert to fraction form
    547,546.40/820,930.80 = 210,456.80/x
  3. Step 3: Cross multiply
    547,546.40x = 820,930.80 × 210,456.80
  4. Step 4: Simplify right side
    547,546.40x = 172,770,469,189.44
  5. Step 5: Solve for x
    x = 172,770,469,189.44/547,546.40
  6. Step 6: Final answer
    x = 315,535.76

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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.