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Finding the Third Proportional to 310,272 and 474,432

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Solution

The third proportional to 310,272 and 474,432 is: 725,446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,272 : 474,432 = 474,432 : x
  2. Step 2: Convert to fraction form
    310,272/474,432 = 474,432/x
  3. Step 3: Cross multiply
    310,272x = 474,432 × 474,432
  4. Step 4: Simplify right side
    310,272x = 225,085,722,624
  5. Step 5: Solve for x
    x = 225,085,722,624/310,272
  6. Step 6: Final answer
    x = 725,446.46

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.