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Finding the Fourth Proportional to 200,395.60, 300,628.02 and 67,288.70

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Solution

The fourth proportional to 200,395.60, 300,628.02 and 67,288.70 is: 100,944.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,395.60 : 300,628.02 = 67,288.70 : x
  2. Step 2: Convert to fraction form
    200,395.60/300,628.02 = 67,288.70/x
  3. Step 3: Cross multiply
    200,395.60x = 300,628.02 × 67,288.70
  4. Step 4: Simplify right side
    200,395.60x = 20,228,868,649.37
  5. Step 5: Solve for x
    x = 20,228,868,649.37/200,395.60
  6. Step 6: Final answer
    x = 100,944.67

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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.