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Finding the Fourth Proportional to 438,385.97, 656,083.60 and 270,022.51

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Solution

The fourth proportional to 438,385.97, 656,083.60 and 270,022.51 is: 404,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,385.97 : 656,083.60 = 270,022.51 : x
  2. Step 2: Convert to fraction form
    438,385.97/656,083.60 = 270,022.51/x
  3. Step 3: Cross multiply
    438,385.97x = 656,083.60 × 270,022.51
  4. Step 4: Simplify right side
    438,385.97x = 177,157,340,586.88
  5. Step 5: Solve for x
    x = 177,157,340,586.88/438,385.97
  6. Step 6: Final answer
    x = 404,112.70

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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.