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Finding the Fourth Proportional to 200,683.78, 300,435.17 and 133,958.41

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Solution

The fourth proportional to 200,683.78, 300,435.17 and 133,958.41 is: 200,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,683.78 : 300,435.17 = 133,958.41 : x
  2. Step 2: Convert to fraction form
    200,683.78/300,435.17 = 133,958.41/x
  3. Step 3: Cross multiply
    200,683.78x = 300,435.17 × 133,958.41
  4. Step 4: Simplify right side
    200,683.78x = 40,245,816,260.40
  5. Step 5: Solve for x
    x = 40,245,816,260.40/200,683.78
  6. Step 6: Final answer
    x = 200,543.45

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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.