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Finding the Fourth Proportional to 220,195.80, 330,423.30 and 79,968.60

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Solution

The fourth proportional to 220,195.80, 330,423.30 and 79,968.60 is: 119,999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,195.80 : 330,423.30 = 79,968.60 : x
  2. Step 2: Convert to fraction form
    220,195.80/330,423.30 = 79,968.60/x
  3. Step 3: Cross multiply
    220,195.80x = 330,423.30 × 79,968.60
  4. Step 4: Simplify right side
    220,195.80x = 26,423,488,708.38
  5. Step 5: Solve for x
    x = 26,423,488,708.38/220,195.80
  6. Step 6: Final answer
    x = 119,999.97

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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.