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Finding the Third Proportional to 140,020 and 307,257

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Solution

The third proportional to 140,020 and 307,257 is: 674,238.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,020 : 307,257 = 307,257 : x
  2. Step 2: Convert to fraction form
    140,020/307,257 = 307,257/x
  3. Step 3: Cross multiply
    140,020x = 307,257 × 307,257
  4. Step 4: Simplify right side
    140,020x = 94,406,864,049
  5. Step 5: Solve for x
    x = 94,406,864,049/140,020
  6. Step 6: Final answer
    x = 674,238.42

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.