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Finding the Fourth Proportional to 300,808.80, 451,213.20 and 266,983.20

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Solution

The fourth proportional to 300,808.80, 451,213.20 and 266,983.20 is: 400,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,808.80 : 451,213.20 = 266,983.20 : x
  2. Step 2: Convert to fraction form
    300,808.80/451,213.20 = 266,983.20/x
  3. Step 3: Cross multiply
    300,808.80x = 451,213.20 × 266,983.20
  4. Step 4: Simplify right side
    300,808.80x = 120,466,344,018.24
  5. Step 5: Solve for x
    x = 120,466,344,018.24/300,808.80
  6. Step 6: Final answer
    x = 400,474.80

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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.