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Finding the Third Proportional to 173,220 and 391,245

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Solution

The third proportional to 173,220 and 391,245 is: 883,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,220 : 391,245 = 391,245 : x
  2. Step 2: Convert to fraction form
    173,220/391,245 = 391,245/x
  3. Step 3: Cross multiply
    173,220x = 391,245 × 391,245
  4. Step 4: Simplify right side
    173,220x = 153,072,650,025
  5. Step 5: Solve for x
    x = 153,072,650,025/173,220
  6. Step 6: Final answer
    x = 883,689.24

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.