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Finding the Third Proportional to 238,478 and 505,387

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Solution

The third proportional to 238,478 and 505,387 is: 1,071,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,478 : 505,387 = 505,387 : x
  2. Step 2: Convert to fraction form
    238,478/505,387 = 505,387/x
  3. Step 3: Cross multiply
    238,478x = 505,387 × 505,387
  4. Step 4: Simplify right side
    238,478x = 255,416,019,769
  5. Step 5: Solve for x
    x = 255,416,019,769/238,478
  6. Step 6: Final answer
    x = 1,071,025.50

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.