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Finding the Third Proportional to 172,980 and 375,480

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Solution

The third proportional to 172,980 and 375,480 is: 815,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,980 : 375,480 = 375,480 : x
  2. Step 2: Convert to fraction form
    172,980/375,480 = 375,480/x
  3. Step 3: Cross multiply
    172,980x = 375,480 × 375,480
  4. Step 4: Simplify right side
    172,980x = 140,985,230,400
  5. Step 5: Solve for x
    x = 140,985,230,400/172,980
  6. Step 6: Final answer
    x = 815,037.75

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.