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Finding the Fourth Proportional to 490,626.78, 677,072.96 and 269,872.80

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Solution

The fourth proportional to 490,626.78, 677,072.96 and 269,872.80 is: 372,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,626.78 : 677,072.96 = 269,872.80 : x
  2. Step 2: Convert to fraction form
    490,626.78/677,072.96 = 269,872.80/x
  3. Step 3: Cross multiply
    490,626.78x = 677,072.96 × 269,872.80
  4. Step 4: Simplify right side
    490,626.78x = 182,723,574,170.12
  5. Step 5: Solve for x
    x = 182,723,574,170.12/490,626.78
  6. Step 6: Final answer
    x = 372,428.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.