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Finding the Third Proportional to 175,788 and 272,420

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Solution

The third proportional to 175,788 and 272,420 is: 422,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,788 : 272,420 = 272,420 : x
  2. Step 2: Convert to fraction form
    175,788/272,420 = 272,420/x
  3. Step 3: Cross multiply
    175,788x = 272,420 × 272,420
  4. Step 4: Simplify right side
    175,788x = 74,212,656,400
  5. Step 5: Solve for x
    x = 74,212,656,400/175,788
  6. Step 6: Final answer
    x = 422,171.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.