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Finding the Fourth Proportional to 451,691.29, 677,598.90 and 262,240.66

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Solution

The fourth proportional to 451,691.29, 677,598.90 and 262,240.66 is: 393,396.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,691.29 : 677,598.90 = 262,240.66 : x
  2. Step 2: Convert to fraction form
    451,691.29/677,598.90 = 262,240.66/x
  3. Step 3: Cross multiply
    451,691.29x = 677,598.90 × 262,240.66
  4. Step 4: Simplify right side
    451,691.29x = 177,693,982,751.27
  5. Step 5: Solve for x
    x = 177,693,982,751.27/451,691.29
  6. Step 6: Final answer
    x = 393,396.97

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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.