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Finding the Fourth Proportional to 300,991.96, 451,563.10 and 212,418.46

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Solution

The fourth proportional to 300,991.96, 451,563.10 and 212,418.46 is: 318,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,991.96 : 451,563.10 = 212,418.46 : x
  2. Step 2: Convert to fraction form
    300,991.96/451,563.10 = 212,418.46/x
  3. Step 3: Cross multiply
    300,991.96x = 451,563.10 × 212,418.46
  4. Step 4: Simplify right side
    300,991.96x = 95,920,334,974.92
  5. Step 5: Solve for x
    x = 95,920,334,974.92/300,991.96
  6. Step 6: Final answer
    x = 318,680.73

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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.