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Finding the Third Proportional to 205,121.25 and 310,511.25

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Solution

The third proportional to 205,121.25 and 310,511.25 is: 470,049.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,121.25 : 310,511.25 = 310,511.25 : x
  2. Step 2: Convert to fraction form
    205,121.25/310,511.25 = 310,511.25/x
  3. Step 3: Cross multiply
    205,121.25x = 310,511.25 × 310,511.25
  4. Step 4: Simplify right side
    205,121.25x = 96,417,236,376.56
  5. Step 5: Solve for x
    x = 96,417,236,376.56/205,121.25
  6. Step 6: Final answer
    x = 470,049.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.