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Finding the Third Proportional to 120,818.25 and 272,970

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Solution

The third proportional to 120,818.25 and 272,970 is: 616,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,818.25 : 272,970 = 272,970 : x
  2. Step 2: Convert to fraction form
    120,818.25/272,970 = 272,970/x
  3. Step 3: Cross multiply
    120,818.25x = 272,970 × 272,970
  4. Step 4: Simplify right side
    120,818.25x = 74,512,620,900
  5. Step 5: Solve for x
    x = 74,512,620,900/120,818.25
  6. Step 6: Final answer
    x = 616,733.16

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.