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Finding the Third Proportional to 308,405 and 474,643

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Solution

The third proportional to 308,405 and 474,643 is: 730,487.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,405 : 474,643 = 474,643 : x
  2. Step 2: Convert to fraction form
    308,405/474,643 = 474,643/x
  3. Step 3: Cross multiply
    308,405x = 474,643 × 474,643
  4. Step 4: Simplify right side
    308,405x = 225,285,977,449
  5. Step 5: Solve for x
    x = 225,285,977,449/308,405
  6. Step 6: Final answer
    x = 730,487.44

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.