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Finding the Fourth Proportional to 444,660.40, 667,087.80 and 220,128.40

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Solution

The fourth proportional to 444,660.40, 667,087.80 and 220,128.40 is: 330,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,660.40 : 667,087.80 = 220,128.40 : x
  2. Step 2: Convert to fraction form
    444,660.40/667,087.80 = 220,128.40/x
  3. Step 3: Cross multiply
    444,660.40x = 667,087.80 × 220,128.40
  4. Step 4: Simplify right side
    444,660.40x = 146,844,970,073.52
  5. Step 5: Solve for x
    x = 146,844,970,073.52/444,660.40
  6. Step 6: Final answer
    x = 330,240.72

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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.