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Finding the Fourth Proportional to 493,273.88, 681,371.51 and 396,840.95

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Solution

The fourth proportional to 493,273.88, 681,371.51 and 396,840.95 is: 548,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,273.88 : 681,371.51 = 396,840.95 : x
  2. Step 2: Convert to fraction form
    493,273.88/681,371.51 = 396,840.95/x
  3. Step 3: Cross multiply
    493,273.88x = 681,371.51 × 396,840.95
  4. Step 4: Simplify right side
    493,273.88x = 270,396,111,940.27
  5. Step 5: Solve for x
    x = 270,396,111,940.27/493,273.88
  6. Step 6: Final answer
    x = 548,166.29

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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.