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Finding the Third Proportional to 154,989.75 and 328,578.75

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Solution

The third proportional to 154,989.75 and 328,578.75 is: 696,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,989.75 : 328,578.75 = 328,578.75 : x
  2. Step 2: Convert to fraction form
    154,989.75/328,578.75 = 328,578.75/x
  3. Step 3: Cross multiply
    154,989.75x = 328,578.75 × 328,578.75
  4. Step 4: Simplify right side
    154,989.75x = 107,963,994,951.56
  5. Step 5: Solve for x
    x = 107,963,994,951.56/154,989.75
  6. Step 6: Final answer
    x = 696,587.97

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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.