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Finding the Fourth Proportional to 220,589, 330,357 and 126,897.92

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Solution

The fourth proportional to 220,589, 330,357 and 126,897.92 is: 190,044.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,589 : 330,357 = 126,897.92 : x
  2. Step 2: Convert to fraction form
    220,589/330,357 = 126,897.92/x
  3. Step 3: Cross multiply
    220,589x = 330,357 × 126,897.92
  4. Step 4: Simplify right side
    220,589x = 41,921,616,157.44
  5. Step 5: Solve for x
    x = 41,921,616,157.44/220,589
  6. Step 6: Final answer
    x = 190,044.00

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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.