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Finding the Fourth Proportional to 444,878.20, 667,000.26 and 208,091.80

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Solution

The fourth proportional to 444,878.20, 667,000.26 and 208,091.80 is: 311,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,878.20 : 667,000.26 = 208,091.80 : x
  2. Step 2: Convert to fraction form
    444,878.20/667,000.26 = 208,091.80/x
  3. Step 3: Cross multiply
    444,878.20x = 667,000.26 × 208,091.80
  4. Step 4: Simplify right side
    444,878.20x = 138,797,284,703.87
  5. Step 5: Solve for x
    x = 138,797,284,703.87/444,878.20
  6. Step 6: Final answer
    x = 311,989.40

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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.