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Finding the Third Proportional to 63,570 and 138,208

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Solution

The third proportional to 63,570 and 138,208 is: 300,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,570 : 138,208 = 138,208 : x
  2. Step 2: Convert to fraction form
    63,570/138,208 = 138,208/x
  3. Step 3: Cross multiply
    63,570x = 138,208 × 138,208
  4. Step 4: Simplify right side
    63,570x = 19,101,451,264
  5. Step 5: Solve for x
    x = 19,101,451,264/63,570
  6. Step 6: Final answer
    x = 300,479.02

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.