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Finding the Third Proportional to 259,726.50 and 405,992.25

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Solution

The third proportional to 259,726.50 and 405,992.25 is: 634,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,726.50 : 405,992.25 = 405,992.25 : x
  2. Step 2: Convert to fraction form
    259,726.50/405,992.25 = 405,992.25/x
  3. Step 3: Cross multiply
    259,726.50x = 405,992.25 × 405,992.25
  4. Step 4: Simplify right side
    259,726.50x = 164,829,707,060.06
  5. Step 5: Solve for x
    x = 164,829,707,060.06/259,726.50
  6. Step 6: Final answer
    x = 634,627.99

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.