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Finding the Third Proportional to 176,220 and 272,970

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Solution

The third proportional to 176,220 and 272,970 is: 422,838.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,220 : 272,970 = 272,970 : x
  2. Step 2: Convert to fraction form
    176,220/272,970 = 272,970/x
  3. Step 3: Cross multiply
    176,220x = 272,970 × 272,970
  4. Step 4: Simplify right side
    176,220x = 74,512,620,900
  5. Step 5: Solve for x
    x = 74,512,620,900/176,220
  6. Step 6: Final answer
    x = 422,838.62

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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.