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Finding the Fourth Proportional to 444,519.60, 666,865.80 and 128,986.80

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Solution

The fourth proportional to 444,519.60, 666,865.80 and 128,986.80 is: 193,505.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,519.60 : 666,865.80 = 128,986.80 : x
  2. Step 2: Convert to fraction form
    444,519.60/666,865.80 = 128,986.80/x
  3. Step 3: Cross multiply
    444,519.60x = 666,865.80 × 128,986.80
  4. Step 4: Simplify right side
    444,519.60x = 86,016,885,571.44
  5. Step 5: Solve for x
    x = 86,016,885,571.44/444,519.60
  6. Step 6: Final answer
    x = 193,505.27

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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.