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Finding the Third Proportional to 154,842 and 239,310

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Solution

The third proportional to 154,842 and 239,310 is: 369,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,842 : 239,310 = 239,310 : x
  2. Step 2: Convert to fraction form
    154,842/239,310 = 239,310/x
  3. Step 3: Cross multiply
    154,842x = 239,310 × 239,310
  4. Step 4: Simplify right side
    154,842x = 57,269,276,100
  5. Step 5: Solve for x
    x = 57,269,276,100/154,842
  6. Step 6: Final answer
    x = 369,856.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.