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Finding the Third Proportional to 133,987.50 and 213,282

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Solution

The third proportional to 133,987.50 and 213,282 is: 339,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,987.50 : 213,282 = 213,282 : x
  2. Step 2: Convert to fraction form
    133,987.50/213,282 = 213,282/x
  3. Step 3: Cross multiply
    133,987.50x = 213,282 × 213,282
  4. Step 4: Simplify right side
    133,987.50x = 45,489,211,524
  5. Step 5: Solve for x
    x = 45,489,211,524/133,987.50
  6. Step 6: Final answer
    x = 339,503.40

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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.