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Finding the Third Proportional to 283,330 and 421,808

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Solution

The third proportional to 283,330 and 421,808 is: 627,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,330 : 421,808 = 421,808 : x
  2. Step 2: Convert to fraction form
    283,330/421,808 = 421,808/x
  3. Step 3: Cross multiply
    283,330x = 421,808 × 421,808
  4. Step 4: Simplify right side
    283,330x = 177,921,988,864
  5. Step 5: Solve for x
    x = 177,921,988,864/283,330
  6. Step 6: Final answer
    x = 627,967.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.