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Finding the Third Proportional to 178,580 and 270,172

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Solution

The third proportional to 178,580 and 270,172 is: 408,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,580 : 270,172 = 270,172 : x
  2. Step 2: Convert to fraction form
    178,580/270,172 = 270,172/x
  3. Step 3: Cross multiply
    178,580x = 270,172 × 270,172
  4. Step 4: Simplify right side
    178,580x = 72,992,909,584
  5. Step 5: Solve for x
    x = 72,992,909,584/178,580
  6. Step 6: Final answer
    x = 408,740.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.