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Finding the Fourth Proportional to 200,665.54, 300,998.88 and 82,338.58

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Solution

The fourth proportional to 200,665.54, 300,998.88 and 82,338.58 is: 123,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,665.54 : 300,998.88 = 82,338.58 : x
  2. Step 2: Convert to fraction form
    200,665.54/300,998.88 = 82,338.58/x
  3. Step 3: Cross multiply
    200,665.54x = 300,998.88 × 82,338.58
  4. Step 4: Simplify right side
    200,665.54x = 24,783,820,360.79
  5. Step 5: Solve for x
    x = 24,783,820,360.79/200,665.54
  6. Step 6: Final answer
    x = 123,508.10

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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.