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Finding the Fourth Proportional to 200,537.80, 300,844.64 and 80,604.09

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Solution

The fourth proportional to 200,537.80, 300,844.64 and 80,604.09 is: 120,921.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,537.80 : 300,844.64 = 80,604.09 : x
  2. Step 2: Convert to fraction form
    200,537.80/300,844.64 = 80,604.09/x
  3. Step 3: Cross multiply
    200,537.80x = 300,844.64 × 80,604.09
  4. Step 4: Simplify right side
    200,537.80x = 24,249,308,186.69
  5. Step 5: Solve for x
    x = 24,249,308,186.69/200,537.80
  6. Step 6: Final answer
    x = 120,921.38

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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.