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Finding the Fourth Proportional to 200,208.83, 300,104.03 and 66,979.49

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Solution

The fourth proportional to 200,208.83, 300,104.03 and 66,979.49 is: 100,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,208.83 : 300,104.03 = 66,979.49 : x
  2. Step 2: Convert to fraction form
    200,208.83/300,104.03 = 66,979.49/x
  3. Step 3: Cross multiply
    200,208.83x = 300,104.03 × 66,979.49
  4. Step 4: Simplify right side
    200,208.83x = 20,100,815,794.05
  5. Step 5: Solve for x
    x = 20,100,815,794.05/200,208.83
  6. Step 6: Final answer
    x = 100,399.25

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1.5x scale

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.