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Finding the Third Proportional to 135,880 and 296,440

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Solution

The third proportional to 135,880 and 296,440 is: 646,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,880 : 296,440 = 296,440 : x
  2. Step 2: Convert to fraction form
    135,880/296,440 = 296,440/x
  3. Step 3: Cross multiply
    135,880x = 296,440 × 296,440
  4. Step 4: Simplify right side
    135,880x = 87,876,673,600
  5. Step 5: Solve for x
    x = 87,876,673,600/135,880
  6. Step 6: Final answer
    x = 646,722.65

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.