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Finding the Fourth Proportional to 200,237.47, 300,467.68 and 81,991.85

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Solution

The fourth proportional to 200,237.47, 300,467.68 and 81,991.85 is: 123,033.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,237.47 : 300,467.68 = 81,991.85 : x
  2. Step 2: Convert to fraction form
    200,237.47/300,467.68 = 81,991.85/x
  3. Step 3: Cross multiply
    200,237.47x = 300,467.68 × 81,991.85
  4. Step 4: Simplify right side
    200,237.47x = 24,635,899,241.09
  5. Step 5: Solve for x
    x = 24,635,899,241.09/200,237.47
  6. Step 6: Final answer
    x = 123,033.41

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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.