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Finding the Third Proportional to 133,989 and 213,284

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Solution

The third proportional to 133,989 and 213,284 is: 339,505.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,989 : 213,284 = 213,284 : x
  2. Step 2: Convert to fraction form
    133,989/213,284 = 213,284/x
  3. Step 3: Cross multiply
    133,989x = 213,284 × 213,284
  4. Step 4: Simplify right side
    133,989x = 45,490,064,656
  5. Step 5: Solve for x
    x = 45,490,064,656/133,989
  6. Step 6: Final answer
    x = 339,505.96

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.