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Finding the Third Proportional to 70,278 and 154,380

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Solution

The third proportional to 70,278 and 154,380 is: 339,127.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,278 : 154,380 = 154,380 : x
  2. Step 2: Convert to fraction form
    70,278/154,380 = 154,380/x
  3. Step 3: Cross multiply
    70,278x = 154,380 × 154,380
  4. Step 4: Simplify right side
    70,278x = 23,833,184,400
  5. Step 5: Solve for x
    x = 23,833,184,400/70,278
  6. Step 6: Final answer
    x = 339,127.24

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.