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Finding the Third Proportional to 135,405 and 210,604.50

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Solution

The third proportional to 135,405 and 210,604.50 is: 327,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,405 : 210,604.50 = 210,604.50 : x
  2. Step 2: Convert to fraction form
    135,405/210,604.50 = 210,604.50/x
  3. Step 3: Cross multiply
    135,405x = 210,604.50 × 210,604.50
  4. Step 4: Simplify right side
    135,405x = 44,354,255,420.25
  5. Step 5: Solve for x
    x = 44,354,255,420.25/135,405
  6. Step 6: Final answer
    x = 327,567.34

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.