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Finding the Third Proportional to 154,686 and 328,324

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Solution

The third proportional to 154,686 and 328,324 is: 696,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,686 : 328,324 = 328,324 : x
  2. Step 2: Convert to fraction form
    154,686/328,324 = 328,324/x
  3. Step 3: Cross multiply
    154,686x = 328,324 × 328,324
  4. Step 4: Simplify right side
    154,686x = 107,796,648,976
  5. Step 5: Solve for x
    x = 107,796,648,976/154,686
  6. Step 6: Final answer
    x = 696,873.98

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.