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Finding the Third Proportional to 101,190 and 217,688

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Solution

The third proportional to 101,190 and 217,688 is: 468,307.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,190 : 217,688 = 217,688 : x
  2. Step 2: Convert to fraction form
    101,190/217,688 = 217,688/x
  3. Step 3: Cross multiply
    101,190x = 217,688 × 217,688
  4. Step 4: Simplify right side
    101,190x = 47,388,065,344
  5. Step 5: Solve for x
    x = 47,388,065,344/101,190
  6. Step 6: Final answer
    x = 468,307.79

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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.