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Finding the Third Proportional to 135,060.75 and 289,730.25

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Solution

The third proportional to 135,060.75 and 289,730.25 is: 621,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,060.75 : 289,730.25 = 289,730.25 : x
  2. Step 2: Convert to fraction form
    135,060.75/289,730.25 = 289,730.25/x
  3. Step 3: Cross multiply
    135,060.75x = 289,730.25 × 289,730.25
  4. Step 4: Simplify right side
    135,060.75x = 83,943,617,765.06
  5. Step 5: Solve for x
    x = 83,943,617,765.06/135,060.75
  6. Step 6: Final answer
    x = 621,524.89

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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.