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Finding the Third Proportional to 137,378 and 217,130

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Solution

The third proportional to 137,378 and 217,130 is: 343,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,378 : 217,130 = 217,130 : x
  2. Step 2: Convert to fraction form
    137,378/217,130 = 217,130/x
  3. Step 3: Cross multiply
    137,378x = 217,130 × 217,130
  4. Step 4: Simplify right side
    137,378x = 47,145,436,900
  5. Step 5: Solve for x
    x = 47,145,436,900/137,378
  6. Step 6: Final answer
    x = 343,180.40

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.