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Finding the Third Proportional to 109,644 and 235,920

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Solution

The third proportional to 109,644 and 235,920 is: 507,626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,644 : 235,920 = 235,920 : x
  2. Step 2: Convert to fraction form
    109,644/235,920 = 235,920/x
  3. Step 3: Cross multiply
    109,644x = 235,920 × 235,920
  4. Step 4: Simplify right side
    109,644x = 55,658,246,400
  5. Step 5: Solve for x
    x = 55,658,246,400/109,644
  6. Step 6: Final answer
    x = 507,626.92

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.