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Finding the Third Proportional to 178,636 and 375,656

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Solution

The third proportional to 178,636 and 375,656 is: 789,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,636 : 375,656 = 375,656 : x
  2. Step 2: Convert to fraction form
    178,636/375,656 = 375,656/x
  3. Step 3: Cross multiply
    178,636x = 375,656 × 375,656
  4. Step 4: Simplify right side
    178,636x = 141,117,430,336
  5. Step 5: Solve for x
    x = 141,117,430,336/178,636
  6. Step 6: Final answer
    x = 789,971.96

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.