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Finding the Fourth Proportional to 220,207.20, 330,310.80 and 195,712.80

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Solution

The fourth proportional to 220,207.20, 330,310.80 and 195,712.80 is: 293,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,207.20 : 330,310.80 = 195,712.80 : x
  2. Step 2: Convert to fraction form
    220,207.20/330,310.80 = 195,712.80/x
  3. Step 3: Cross multiply
    220,207.20x = 330,310.80 × 195,712.80
  4. Step 4: Simplify right side
    220,207.20x = 64,646,051,538.24
  5. Step 5: Solve for x
    x = 64,646,051,538.24/220,207.20
  6. Step 6: Final answer
    x = 293,569.20

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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.