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Finding the Third Proportional to 285,714 and 427,168

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Solution

The third proportional to 285,714 and 427,168 is: 638,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,714 : 427,168 = 427,168 : x
  2. Step 2: Convert to fraction form
    285,714/427,168 = 427,168/x
  3. Step 3: Cross multiply
    285,714x = 427,168 × 427,168
  4. Step 4: Simplify right side
    285,714x = 182,472,500,224
  5. Step 5: Solve for x
    x = 182,472,500,224/285,714
  6. Step 6: Final answer
    x = 638,654.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.