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Finding the Third Proportional to 242,354 and 515,812

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Solution

The third proportional to 242,354 and 515,812 is: 1,097,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,354 : 515,812 = 515,812 : x
  2. Step 2: Convert to fraction form
    242,354/515,812 = 515,812/x
  3. Step 3: Cross multiply
    242,354x = 515,812 × 515,812
  4. Step 4: Simplify right side
    242,354x = 266,062,019,344
  5. Step 5: Solve for x
    x = 266,062,019,344/242,354
  6. Step 6: Final answer
    x = 1,097,823.92

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.