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Finding the Fourth Proportional to 454,860.40, 682,290.60 and 218,081.20

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Solution

The fourth proportional to 454,860.40, 682,290.60 and 218,081.20 is: 327,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,860.40 : 682,290.60 = 218,081.20 : x
  2. Step 2: Convert to fraction form
    454,860.40/682,290.60 = 218,081.20/x
  3. Step 3: Cross multiply
    454,860.40x = 682,290.60 × 218,081.20
  4. Step 4: Simplify right side
    454,860.40x = 148,794,752,796.72
  5. Step 5: Solve for x
    x = 148,794,752,796.72/454,860.40
  6. Step 6: Final answer
    x = 327,121.80

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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.