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Finding the Third Proportional to 154,855.50 and 328,318.50

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Solution

The third proportional to 154,855.50 and 328,318.50 is: 696,087.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,855.50 : 328,318.50 = 328,318.50 : x
  2. Step 2: Convert to fraction form
    154,855.50/328,318.50 = 328,318.50/x
  3. Step 3: Cross multiply
    154,855.50x = 328,318.50 × 328,318.50
  4. Step 4: Simplify right side
    154,855.50x = 107,793,037,442.25
  5. Step 5: Solve for x
    x = 107,793,037,442.25/154,855.50
  6. Step 6: Final answer
    x = 696,087.88

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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.