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Finding the Fourth Proportional to 217,441.92, 300,072.90 and 131,388.96

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Solution

The fourth proportional to 217,441.92, 300,072.90 and 131,388.96 is: 181,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,441.92 : 300,072.90 = 131,388.96 : x
  2. Step 2: Convert to fraction form
    217,441.92/300,072.90 = 131,388.96/x
  3. Step 3: Cross multiply
    217,441.92x = 300,072.90 × 131,388.96
  4. Step 4: Simplify right side
    217,441.92x = 39,426,266,255.18
  5. Step 5: Solve for x
    x = 39,426,266,255.18/217,441.92
  6. Step 6: Final answer
    x = 181,318.61

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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.