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Finding the Fourth Proportional to 491,174.43, 677,813.94 and 276,314.43

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Solution

The fourth proportional to 491,174.43, 677,813.94 and 276,314.43 is: 381,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,174.43 : 677,813.94 = 276,314.43 : x
  2. Step 2: Convert to fraction form
    491,174.43/677,813.94 = 276,314.43/x
  3. Step 3: Cross multiply
    491,174.43x = 677,813.94 × 276,314.43
  4. Step 4: Simplify right side
    491,174.43x = 187,289,772,477.15
  5. Step 5: Solve for x
    x = 187,289,772,477.15/491,174.43
  6. Step 6: Final answer
    x = 381,310.10

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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.