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Finding the Third Proportional to 221,840 and 313,892

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Solution

The third proportional to 221,840 and 313,892 is: 444,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,840 : 313,892 = 313,892 : x
  2. Step 2: Convert to fraction form
    221,840/313,892 = 313,892/x
  3. Step 3: Cross multiply
    221,840x = 313,892 × 313,892
  4. Step 4: Simplify right side
    221,840x = 98,528,187,664
  5. Step 5: Solve for x
    x = 98,528,187,664/221,840
  6. Step 6: Final answer
    x = 444,140.77

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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.