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Finding the Third Proportional to 74,760 and 163,280

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Solution

The third proportional to 74,760 and 163,280 is: 356,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,760 : 163,280 = 163,280 : x
  2. Step 2: Convert to fraction form
    74,760/163,280 = 163,280/x
  3. Step 3: Cross multiply
    74,760x = 163,280 × 163,280
  4. Step 4: Simplify right side
    74,760x = 26,660,358,400
  5. Step 5: Solve for x
    x = 26,660,358,400/74,760
  6. Step 6: Final answer
    x = 356,612.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.