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Finding the Third Proportional to 117,980 and 254,728

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Solution

The third proportional to 117,980 and 254,728 is: 549,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,980 : 254,728 = 254,728 : x
  2. Step 2: Convert to fraction form
    117,980/254,728 = 254,728/x
  3. Step 3: Cross multiply
    117,980x = 254,728 × 254,728
  4. Step 4: Simplify right side
    117,980x = 64,886,353,984
  5. Step 5: Solve for x
    x = 64,886,353,984/117,980
  6. Step 6: Final answer
    x = 549,977.57

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.