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Finding the Third Proportional to 71,243 and 153,205

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Solution

The third proportional to 71,243 and 153,205 is: 329,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,243 : 153,205 = 153,205 : x
  2. Step 2: Convert to fraction form
    71,243/153,205 = 153,205/x
  3. Step 3: Cross multiply
    71,243x = 153,205 × 153,205
  4. Step 4: Simplify right side
    71,243x = 23,471,772,025
  5. Step 5: Solve for x
    x = 23,471,772,025/71,243
  6. Step 6: Final answer
    x = 329,460.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.