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Finding the Third Proportional to 153,121.50 and 225,306

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Solution

The third proportional to 153,121.50 and 225,306 is: 331,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.50 : 225,306 = 225,306 : x
  2. Step 2: Convert to fraction form
    153,121.50/225,306 = 225,306/x
  3. Step 3: Cross multiply
    153,121.50x = 225,306 × 225,306
  4. Step 4: Simplify right side
    153,121.50x = 50,762,793,636
  5. Step 5: Solve for x
    x = 50,762,793,636/153,121.50
  6. Step 6: Final answer
    x = 331,519.70

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.