Home / 275,921.20-380,772.75-161,206.57

Finding the Fourth Proportional to 275,921.20, 380,772.75 and 161,206.57

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Solution

The fourth proportional to 275,921.20, 380,772.75 and 161,206.57 is: 222,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,921.20 : 380,772.75 = 161,206.57 : x
  2. Step 2: Convert to fraction form
    275,921.20/380,772.75 = 161,206.57/x
  3. Step 3: Cross multiply
    275,921.20x = 380,772.75 × 161,206.57
  4. Step 4: Simplify right side
    275,921.20x = 61,383,068,976.97
  5. Step 5: Solve for x
    x = 61,383,068,976.97/275,921.20
  6. Step 6: Final answer
    x = 222,465.94

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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.