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Finding the Fourth Proportional to 548,438.80, 821,736.60 and 267,350.80

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Solution

The fourth proportional to 548,438.80, 821,736.60 and 267,350.80 is: 400,576.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,438.80 : 821,736.60 = 267,350.80 : x
  2. Step 2: Convert to fraction form
    548,438.80/821,736.60 = 267,350.80/x
  3. Step 3: Cross multiply
    548,438.80x = 821,736.60 × 267,350.80
  4. Step 4: Simplify right side
    548,438.80x = 219,691,937,399.28
  5. Step 5: Solve for x
    x = 219,691,937,399.28/548,438.80
  6. Step 6: Final answer
    x = 400,576.94

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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.