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Finding the Third Proportional to 145,212 and 217,809

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Solution

The third proportional to 145,212 and 217,809 is: 326,700.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,212 : 217,809 = 217,809 : x
  2. Step 2: Convert to fraction form
    145,212/217,809 = 217,809/x
  3. Step 3: Cross multiply
    145,212x = 217,809 × 217,809
  4. Step 4: Simplify right side
    145,212x = 47,440,760,481
  5. Step 5: Solve for x
    x = 47,440,760,481/145,212
  6. Step 6: Final answer
    x = 326,700.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.