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Finding the Third Proportional to 56,395 and 122,509

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Solution

The third proportional to 56,395 and 122,509 is: 266,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,395 : 122,509 = 122,509 : x
  2. Step 2: Convert to fraction form
    56,395/122,509 = 122,509/x
  3. Step 3: Cross multiply
    56,395x = 122,509 × 122,509
  4. Step 4: Simplify right side
    56,395x = 15,008,455,081
  5. Step 5: Solve for x
    x = 15,008,455,081/56,395
  6. Step 6: Final answer
    x = 266,130.95

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.