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Finding the Third Proportional to 155,129 and 248,891

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Solution

The third proportional to 155,129 and 248,891 is: 399,323.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,129 : 248,891 = 248,891 : x
  2. Step 2: Convert to fraction form
    155,129/248,891 = 248,891/x
  3. Step 3: Cross multiply
    155,129x = 248,891 × 248,891
  4. Step 4: Simplify right side
    155,129x = 61,946,729,881
  5. Step 5: Solve for x
    x = 61,946,729,881/155,129
  6. Step 6: Final answer
    x = 399,323.98

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.