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Finding the Fourth Proportional to 217,571.33, 300,243.65 and 120,769.47

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Solution

The fourth proportional to 217,571.33, 300,243.65 and 120,769.47 is: 166,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,571.33 : 300,243.65 = 120,769.47 : x
  2. Step 2: Convert to fraction form
    217,571.33/300,243.65 = 120,769.47/x
  3. Step 3: Cross multiply
    217,571.33x = 300,243.65 × 120,769.47
  4. Step 4: Simplify right side
    217,571.33x = 36,260,265,877.52
  5. Step 5: Solve for x
    x = 36,260,265,877.52/217,571.33
  6. Step 6: Final answer
    x = 166,659.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.