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Finding the Third Proportional to 66,445 and 145,293

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Solution

The third proportional to 66,445 and 145,293 is: 317,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,445 : 145,293 = 145,293 : x
  2. Step 2: Convert to fraction form
    66,445/145,293 = 145,293/x
  3. Step 3: Cross multiply
    66,445x = 145,293 × 145,293
  4. Step 4: Simplify right side
    66,445x = 21,110,055,849
  5. Step 5: Solve for x
    x = 21,110,055,849/66,445
  6. Step 6: Final answer
    x = 317,707.21

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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.