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Finding the Fourth Proportional to 547,297.20, 820,945.80 and 252,385.20

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Solution

The fourth proportional to 547,297.20, 820,945.80 and 252,385.20 is: 378,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,297.20 : 820,945.80 = 252,385.20 : x
  2. Step 2: Convert to fraction form
    547,297.20/820,945.80 = 252,385.20/x
  3. Step 3: Cross multiply
    547,297.20x = 820,945.80 × 252,385.20
  4. Step 4: Simplify right side
    547,297.20x = 207,194,569,922.16
  5. Step 5: Solve for x
    x = 207,194,569,922.16/547,297.20
  6. Step 6: Final answer
    x = 378,577.80

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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.