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Finding the Third Proportional to 255,554 and 400,950

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Solution

The third proportional to 255,554 and 400,950 is: 629,068.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,554 : 400,950 = 400,950 : x
  2. Step 2: Convert to fraction form
    255,554/400,950 = 400,950/x
  3. Step 3: Cross multiply
    255,554x = 400,950 × 400,950
  4. Step 4: Simplify right side
    255,554x = 160,760,902,500
  5. Step 5: Solve for x
    x = 160,760,902,500/255,554
  6. Step 6: Final answer
    x = 629,068.23

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.