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Finding the Third Proportional to 128,736 and 274,071

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Solution

The third proportional to 128,736 and 274,071 is: 583,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736 : 274,071 = 274,071 : x
  2. Step 2: Convert to fraction form
    128,736/274,071 = 274,071/x
  3. Step 3: Cross multiply
    128,736x = 274,071 × 274,071
  4. Step 4: Simplify right side
    128,736x = 75,114,913,041
  5. Step 5: Solve for x
    x = 75,114,913,041/128,736
  6. Step 6: Final answer
    x = 583,480.25

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.