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Finding the Third Proportional to 221,790 and 313,827

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Solution

The third proportional to 221,790 and 313,827 is: 444,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,790 : 313,827 = 313,827 : x
  2. Step 2: Convert to fraction form
    221,790/313,827 = 313,827/x
  3. Step 3: Cross multiply
    221,790x = 313,827 × 313,827
  4. Step 4: Simplify right side
    221,790x = 98,487,385,929
  5. Step 5: Solve for x
    x = 98,487,385,929/221,790
  6. Step 6: Final answer
    x = 444,056.93

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.