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Finding the Third Proportional to 213,523 and 313,859

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Solution

The third proportional to 213,523 and 313,859 is: 461,343.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,523 : 313,859 = 313,859 : x
  2. Step 2: Convert to fraction form
    213,523/313,859 = 313,859/x
  3. Step 3: Cross multiply
    213,523x = 313,859 × 313,859
  4. Step 4: Simplify right side
    213,523x = 98,507,471,881
  5. Step 5: Solve for x
    x = 98,507,471,881/213,523
  6. Step 6: Final answer
    x = 461,343.61

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.