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Finding the Fourth Proportional to 300,828.80, 451,243.20 and 267,003.20

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Solution

The fourth proportional to 300,828.80, 451,243.20 and 267,003.20 is: 400,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,828.80 : 451,243.20 = 267,003.20 : x
  2. Step 2: Convert to fraction form
    300,828.80/451,243.20 = 267,003.20/x
  3. Step 3: Cross multiply
    300,828.80x = 451,243.20 × 267,003.20
  4. Step 4: Simplify right side
    300,828.80x = 120,483,378,378.24
  5. Step 5: Solve for x
    x = 120,483,378,378.24/300,828.80
  6. Step 6: Final answer
    x = 400,504.80

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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.