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Finding the Third Proportional to 210,916 and 325,686

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Solution

The third proportional to 210,916 and 325,686 is: 502,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,916 : 325,686 = 325,686 : x
  2. Step 2: Convert to fraction form
    210,916/325,686 = 325,686/x
  3. Step 3: Cross multiply
    210,916x = 325,686 × 325,686
  4. Step 4: Simplify right side
    210,916x = 106,071,370,596
  5. Step 5: Solve for x
    x = 106,071,370,596/210,916
  6. Step 6: Final answer
    x = 502,908.13

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.