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Finding the Third Proportional to 77,777 and 170,620

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Solution

The third proportional to 77,777 and 170,620 is: 374,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,777 : 170,620 = 170,620 : x
  2. Step 2: Convert to fraction form
    77,777/170,620 = 170,620/x
  3. Step 3: Cross multiply
    77,777x = 170,620 × 170,620
  4. Step 4: Simplify right side
    77,777x = 29,111,184,400
  5. Step 5: Solve for x
    x = 29,111,184,400/77,777
  6. Step 6: Final answer
    x = 374,290.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.