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Finding the Fourth Proportional to 200,395.10, 300,627.27 and 67,288.20

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Solution

The fourth proportional to 200,395.10, 300,627.27 and 67,288.20 is: 100,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,395.10 : 300,627.27 = 67,288.20 : x
  2. Step 2: Convert to fraction form
    200,395.10/300,627.27 = 67,288.20/x
  3. Step 3: Cross multiply
    200,395.10x = 300,627.27 × 67,288.20
  4. Step 4: Simplify right side
    200,395.10x = 20,228,667,869.21
  5. Step 5: Solve for x
    x = 20,228,667,869.21/200,395.10
  6. Step 6: Final answer
    x = 100,943.92

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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.