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Finding the Fourth Proportional to 481,806, 722,753.55 and 126,821.88

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Solution

The fourth proportional to 481,806, 722,753.55 and 126,821.88 is: 190,244.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,806 : 722,753.55 = 126,821.88 : x
  2. Step 2: Convert to fraction form
    481,806/722,753.55 = 126,821.88/x
  3. Step 3: Cross multiply
    481,806x = 722,753.55 × 126,821.88
  4. Step 4: Simplify right side
    481,806x = 91,660,963,987.67
  5. Step 5: Solve for x
    x = 91,660,963,987.67/481,806
  6. Step 6: Final answer
    x = 190,244.55

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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.