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Finding the Third Proportional to 69,389 and 163,748

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Solution

The third proportional to 69,389 and 163,748 is: 386,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,389 : 163,748 = 163,748 : x
  2. Step 2: Convert to fraction form
    69,389/163,748 = 163,748/x
  3. Step 3: Cross multiply
    69,389x = 163,748 × 163,748
  4. Step 4: Simplify right side
    69,389x = 26,813,407,504
  5. Step 5: Solve for x
    x = 26,813,407,504/69,389
  6. Step 6: Final answer
    x = 386,421.59

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.