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Finding the Fourth Proportional to 220,382.80, 330,620.60 and 115,173.52

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Solution

The fourth proportional to 220,382.80, 330,620.60 and 115,173.52 is: 172,784.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,382.80 : 330,620.60 = 115,173.52 : x
  2. Step 2: Convert to fraction form
    220,382.80/330,620.60 = 115,173.52/x
  3. Step 3: Cross multiply
    220,382.80x = 330,620.60 × 115,173.52
  4. Step 4: Simplify right side
    220,382.80x = 38,078,738,286.51
  5. Step 5: Solve for x
    x = 38,078,738,286.51/220,382.80
  6. Step 6: Final answer
    x = 172,784.53

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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.