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Finding the Third Proportional to 242,213 and 378,035

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Solution

The third proportional to 242,213 and 378,035 is: 590,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,213 : 378,035 = 378,035 : x
  2. Step 2: Convert to fraction form
    242,213/378,035 = 378,035/x
  3. Step 3: Cross multiply
    242,213x = 378,035 × 378,035
  4. Step 4: Simplify right side
    242,213x = 142,910,461,225
  5. Step 5: Solve for x
    x = 142,910,461,225/242,213
  6. Step 6: Final answer
    x = 590,019.78

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.