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Finding the Fourth Proportional to 444,067.80, 666,101.70 and 128,556.60

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Solution

The fourth proportional to 444,067.80, 666,101.70 and 128,556.60 is: 192,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,067.80 : 666,101.70 = 128,556.60 : x
  2. Step 2: Convert to fraction form
    444,067.80/666,101.70 = 128,556.60/x
  3. Step 3: Cross multiply
    444,067.80x = 666,101.70 × 128,556.60
  4. Step 4: Simplify right side
    444,067.80x = 85,631,769,806.22
  5. Step 5: Solve for x
    x = 85,631,769,806.22/444,067.80
  6. Step 6: Final answer
    x = 192,834.90

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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.