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Finding the Third Proportional to 259,058.25 and 399,657.50

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Solution

The third proportional to 259,058.25 and 399,657.50 is: 616,564.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,058.25 : 399,657.50 = 399,657.50 : x
  2. Step 2: Convert to fraction form
    259,058.25/399,657.50 = 399,657.50/x
  3. Step 3: Cross multiply
    259,058.25x = 399,657.50 × 399,657.50
  4. Step 4: Simplify right side
    259,058.25x = 159,726,117,306.25
  5. Step 5: Solve for x
    x = 159,726,117,306.25/259,058.25
  6. Step 6: Final answer
    x = 616,564.49

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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.