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Finding the Third Proportional to 98,420 and 152,815

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Solution

The third proportional to 98,420 and 152,815 is: 237,273.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,420 : 152,815 = 152,815 : x
  2. Step 2: Convert to fraction form
    98,420/152,815 = 152,815/x
  3. Step 3: Cross multiply
    98,420x = 152,815 × 152,815
  4. Step 4: Simplify right side
    98,420x = 23,352,424,225
  5. Step 5: Solve for x
    x = 23,352,424,225/98,420
  6. Step 6: Final answer
    x = 237,273.16

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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.