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Finding the Third Proportional to 153,186 and 220,635

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Solution

The third proportional to 153,186 and 220,635 is: 317,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,186 : 220,635 = 220,635 : x
  2. Step 2: Convert to fraction form
    153,186/220,635 = 220,635/x
  3. Step 3: Cross multiply
    153,186x = 220,635 × 220,635
  4. Step 4: Simplify right side
    153,186x = 48,679,803,225
  5. Step 5: Solve for x
    x = 48,679,803,225/153,186
  6. Step 6: Final answer
    x = 317,782.32

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.