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Finding the Third Proportional to 180,300 and 261,153

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Solution

The third proportional to 180,300 and 261,153 is: 378,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,300 : 261,153 = 261,153 : x
  2. Step 2: Convert to fraction form
    180,300/261,153 = 261,153/x
  3. Step 3: Cross multiply
    180,300x = 261,153 × 261,153
  4. Step 4: Simplify right side
    180,300x = 68,200,889,409
  5. Step 5: Solve for x
    x = 68,200,889,409/180,300
  6. Step 6: Final answer
    x = 378,263.39

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.