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Finding the Third Proportional to 153,666 and 207,153

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Solution

The third proportional to 153,666 and 207,153 is: 279,257.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,666 : 207,153 = 207,153 : x
  2. Step 2: Convert to fraction form
    153,666/207,153 = 207,153/x
  3. Step 3: Cross multiply
    153,666x = 207,153 × 207,153
  4. Step 4: Simplify right side
    153,666x = 42,912,365,409
  5. Step 5: Solve for x
    x = 42,912,365,409/153,666
  6. Step 6: Final answer
    x = 279,257.39

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.