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Finding the Fourth Proportional to 300,992.46, 451,563.85 and 212,418.96

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Solution

The fourth proportional to 300,992.46, 451,563.85 and 212,418.96 is: 318,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,992.46 : 451,563.85 = 212,418.96 : x
  2. Step 2: Convert to fraction form
    300,992.46/451,563.85 = 212,418.96/x
  3. Step 3: Cross multiply
    300,992.46x = 451,563.85 × 212,418.96
  4. Step 4: Simplify right side
    300,992.46x = 95,920,723,390.60
  5. Step 5: Solve for x
    x = 95,920,723,390.60/300,992.46
  6. Step 6: Final answer
    x = 318,681.48

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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.