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Finding the Third Proportional to 283,672 and 431,400

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Solution

The third proportional to 283,672 and 431,400 is: 656,060.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,672 : 431,400 = 431,400 : x
  2. Step 2: Convert to fraction form
    283,672/431,400 = 431,400/x
  3. Step 3: Cross multiply
    283,672x = 431,400 × 431,400
  4. Step 4: Simplify right side
    283,672x = 186,105,960,000
  5. Step 5: Solve for x
    x = 186,105,960,000/283,672
  6. Step 6: Final answer
    x = 656,060.38

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.