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Finding the Third Proportional to 217,878.75 and 330,078.38

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Solution

The third proportional to 217,878.75 and 330,078.38 is: 500,056.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,878.75 : 330,078.38 = 330,078.38 : x
  2. Step 2: Convert to fraction form
    217,878.75/330,078.38 = 330,078.38/x
  3. Step 3: Cross multiply
    217,878.75x = 330,078.38 × 330,078.38
  4. Step 4: Simplify right side
    217,878.75x = 108,951,733,642.64
  5. Step 5: Solve for x
    x = 108,951,733,642.64/217,878.75
  6. Step 6: Final answer
    x = 500,056.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.