Home / 213,608.28-320,223.85-80,581.95

Finding the Fourth Proportional to 213,608.28, 320,223.85 and 80,581.95

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Solution

The fourth proportional to 213,608.28, 320,223.85 and 80,581.95 is: 120,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,608.28 : 320,223.85 = 80,581.95 : x
  2. Step 2: Convert to fraction form
    213,608.28/320,223.85 = 80,581.95/x
  3. Step 3: Cross multiply
    213,608.28x = 320,223.85 × 80,581.95
  4. Step 4: Simplify right side
    213,608.28x = 25,804,261,866.60
  5. Step 5: Solve for x
    x = 25,804,261,866.60/213,608.28
  6. Step 6: Final answer
    x = 120,801.79

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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.