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Finding the Third Proportional to 253,287 and 401,072

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Solution

The third proportional to 253,287 and 401,072 is: 635,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,287 : 401,072 = 401,072 : x
  2. Step 2: Convert to fraction form
    253,287/401,072 = 401,072/x
  3. Step 3: Cross multiply
    253,287x = 401,072 × 401,072
  4. Step 4: Simplify right side
    253,287x = 160,858,749,184
  5. Step 5: Solve for x
    x = 160,858,749,184/253,287
  6. Step 6: Final answer
    x = 635,084.90

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.