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Finding the Fourth Proportional to 548,439.80, 821,738.10 and 267,351.80

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Solution

The fourth proportional to 548,439.80, 821,738.10 and 267,351.80 is: 400,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,439.80 : 821,738.10 = 267,351.80 : x
  2. Step 2: Convert to fraction form
    548,439.80/821,738.10 = 267,351.80/x
  3. Step 3: Cross multiply
    548,439.80x = 821,738.10 × 267,351.80
  4. Step 4: Simplify right side
    548,439.80x = 219,693,160,163.58
  5. Step 5: Solve for x
    x = 219,693,160,163.58/548,439.80
  6. Step 6: Final answer
    x = 400,578.44

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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.