Home / 217,180.20-325,532.70-76,866.60

Finding the Fourth Proportional to 217,180.20, 325,532.70 and 76,866.60

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Solution

The fourth proportional to 217,180.20, 325,532.70 and 76,866.60 is: 115,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,180.20 : 325,532.70 = 76,866.60 : x
  2. Step 2: Convert to fraction form
    217,180.20/325,532.70 = 76,866.60/x
  3. Step 3: Cross multiply
    217,180.20x = 325,532.70 × 76,866.60
  4. Step 4: Simplify right side
    217,180.20x = 25,022,591,837.82
  5. Step 5: Solve for x
    x = 25,022,591,837.82/217,180.20
  6. Step 6: Final answer
    x = 115,215.81

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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.