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Finding the Third Proportional to 137,364 and 212,580

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Solution

The third proportional to 137,364 and 212,580 is: 328,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,364 : 212,580 = 212,580 : x
  2. Step 2: Convert to fraction form
    137,364/212,580 = 212,580/x
  3. Step 3: Cross multiply
    137,364x = 212,580 × 212,580
  4. Step 4: Simplify right side
    137,364x = 45,190,256,400
  5. Step 5: Solve for x
    x = 45,190,256,400/137,364
  6. Step 6: Final answer
    x = 328,981.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.