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Finding the Third Proportional to 60,290 and 128,356

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Solution

The third proportional to 60,290 and 128,356 is: 273,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,290 : 128,356 = 128,356 : x
  2. Step 2: Convert to fraction form
    60,290/128,356 = 128,356/x
  3. Step 3: Cross multiply
    60,290x = 128,356 × 128,356
  4. Step 4: Simplify right side
    60,290x = 16,475,262,736
  5. Step 5: Solve for x
    x = 16,475,262,736/60,290
  6. Step 6: Final answer
    x = 273,266.92

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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.