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Finding the Fourth Proportional to 200,535.28, 300,840.87 and 80,601.56

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Solution

The fourth proportional to 200,535.28, 300,840.87 and 80,601.56 is: 120,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,535.28 : 300,840.87 = 80,601.56 : x
  2. Step 2: Convert to fraction form
    200,535.28/300,840.87 = 80,601.56/x
  3. Step 3: Cross multiply
    200,535.28x = 300,840.87 × 80,601.56
  4. Step 4: Simplify right side
    200,535.28x = 24,248,243,433.76
  5. Step 5: Solve for x
    x = 24,248,243,433.76/200,535.28
  6. Step 6: Final answer
    x = 120,917.59

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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.