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Finding the Third Proportional to 156,121.50 and 246,976.50

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Solution

The third proportional to 156,121.50 and 246,976.50 is: 390,704.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,121.50 : 246,976.50 = 246,976.50 : x
  2. Step 2: Convert to fraction form
    156,121.50/246,976.50 = 246,976.50/x
  3. Step 3: Cross multiply
    156,121.50x = 246,976.50 × 246,976.50
  4. Step 4: Simplify right side
    156,121.50x = 60,997,391,552.25
  5. Step 5: Solve for x
    x = 60,997,391,552.25/156,121.50
  6. Step 6: Final answer
    x = 390,704.62

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.