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Finding the Third Proportional to 66,280 and 140,237

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Solution

The third proportional to 66,280 and 140,237 is: 296,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,280 : 140,237 = 140,237 : x
  2. Step 2: Convert to fraction form
    66,280/140,237 = 140,237/x
  3. Step 3: Cross multiply
    66,280x = 140,237 × 140,237
  4. Step 4: Simplify right side
    66,280x = 19,666,416,169
  5. Step 5: Solve for x
    x = 19,666,416,169/66,280
  6. Step 6: Final answer
    x = 296,717.20

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.