Home / 220,259.22-330,375.45-78,111.54

Finding the Fourth Proportional to 220,259.22, 330,375.45 and 78,111.54

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Solution

The fourth proportional to 220,259.22, 330,375.45 and 78,111.54 is: 117,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,259.22 : 330,375.45 = 78,111.54 : x
  2. Step 2: Convert to fraction form
    220,259.22/330,375.45 = 78,111.54/x
  3. Step 3: Cross multiply
    220,259.22x = 330,375.45 × 78,111.54
  4. Step 4: Simplify right side
    220,259.22x = 25,806,135,177.69
  5. Step 5: Solve for x
    x = 25,806,135,177.69/220,259.22
  6. Step 6: Final answer
    x = 117,162.56

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1.5x scale

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.