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Finding the Fourth Proportional to 264,660, 396,990 and 67,668

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Solution

The fourth proportional to 264,660, 396,990 and 67,668 is: 101,502

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,660 : 396,990 = 67,668 : x
  2. Step 2: Convert to fraction form
    264,660/396,990 = 67,668/x
  3. Step 3: Cross multiply
    264,660x = 396,990 × 67,668
  4. Step 4: Simplify right side
    264,660x = 26,863,519,320
  5. Step 5: Solve for x
    x = 26,863,519,320/264,660
  6. Step 6: Final answer
    x = 101,502

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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.