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Finding the Third Proportional to 221,448.75 and 343,554

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Solution

The third proportional to 221,448.75 and 343,554 is: 532,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,448.75 : 343,554 = 343,554 : x
  2. Step 2: Convert to fraction form
    221,448.75/343,554 = 343,554/x
  3. Step 3: Cross multiply
    221,448.75x = 343,554 × 343,554
  4. Step 4: Simplify right side
    221,448.75x = 118,029,350,916
  5. Step 5: Solve for x
    x = 118,029,350,916/221,448.75
  6. Step 6: Final answer
    x = 532,987.21

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.