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Finding the Third Proportional to 172,988 and 372,640

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Solution

The third proportional to 172,988 and 372,640 is: 802,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,988 : 372,640 = 372,640 : x
  2. Step 2: Convert to fraction form
    172,988/372,640 = 372,640/x
  3. Step 3: Cross multiply
    172,988x = 372,640 × 372,640
  4. Step 4: Simplify right side
    172,988x = 138,860,569,600
  5. Step 5: Solve for x
    x = 138,860,569,600/172,988
  6. Step 6: Final answer
    x = 802,717.93

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.