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Finding the Fourth Proportional to 216,917.80, 325,407.68 and 67,171.48

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Solution

The fourth proportional to 216,917.80, 325,407.68 and 67,171.48 is: 100,766.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,917.80 : 325,407.68 = 67,171.48 : x
  2. Step 2: Convert to fraction form
    216,917.80/325,407.68 = 67,171.48/x
  3. Step 3: Cross multiply
    216,917.80x = 325,407.68 × 67,171.48
  4. Step 4: Simplify right side
    216,917.80x = 21,858,114,571.48
  5. Step 5: Solve for x
    x = 21,858,114,571.48/216,917.80
  6. Step 6: Final answer
    x = 100,766.81

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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.