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Finding the Fourth Proportional to 200,628.78, 300,959.56 and 82,301.14

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Solution

The fourth proportional to 200,628.78, 300,959.56 and 82,301.14 is: 123,458.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,628.78 : 300,959.56 = 82,301.14 : x
  2. Step 2: Convert to fraction form
    200,628.78/300,959.56 = 82,301.14/x
  3. Step 3: Cross multiply
    200,628.78x = 300,959.56 × 82,301.14
  4. Step 4: Simplify right side
    200,628.78x = 24,769,314,881.90
  5. Step 5: Solve for x
    x = 24,769,314,881.90/200,628.78
  6. Step 6: Final answer
    x = 123,458.43

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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.