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Finding the Fourth Proportional to 200,683.65, 300,434.97 and 133,958.28

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Solution

The fourth proportional to 200,683.65, 300,434.97 and 133,958.28 is: 200,543.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,683.65 : 300,434.97 = 133,958.28 : x
  2. Step 2: Convert to fraction form
    200,683.65/300,434.97 = 133,958.28/x
  3. Step 3: Cross multiply
    200,683.65x = 300,434.97 × 133,958.28
  4. Step 4: Simplify right side
    200,683.65x = 40,245,751,833.05
  5. Step 5: Solve for x
    x = 40,245,751,833.05/200,683.65
  6. Step 6: Final answer
    x = 200,543.25

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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.