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Finding the Fourth Proportional to 200,529.70, 300,794.55 and 82,285.90

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Solution

The fourth proportional to 200,529.70, 300,794.55 and 82,285.90 is: 123,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,529.70 : 300,794.55 = 82,285.90 : x
  2. Step 2: Convert to fraction form
    200,529.70/300,794.55 = 82,285.90/x
  3. Step 3: Cross multiply
    200,529.70x = 300,794.55 × 82,285.90
  4. Step 4: Simplify right side
    200,529.70x = 24,751,150,261.85
  5. Step 5: Solve for x
    x = 24,751,150,261.85/200,529.70
  6. Step 6: Final answer
    x = 123,428.85

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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.