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Finding the Third Proportional to 172,617 and 369,220

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Solution

The third proportional to 172,617 and 369,220 is: 789,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,617 : 369,220 = 369,220 : x
  2. Step 2: Convert to fraction form
    172,617/369,220 = 369,220/x
  3. Step 3: Cross multiply
    172,617x = 369,220 × 369,220
  4. Step 4: Simplify right side
    172,617x = 136,323,408,400
  5. Step 5: Solve for x
    x = 136,323,408,400/172,617
  6. Step 6: Final answer
    x = 789,744.98

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.