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Finding the Third Proportional to 317,425.50 and 491,818.50

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Solution

The third proportional to 317,425.50 and 491,818.50 is: 762,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,425.50 : 491,818.50 = 491,818.50 : x
  2. Step 2: Convert to fraction form
    317,425.50/491,818.50 = 491,818.50/x
  3. Step 3: Cross multiply
    317,425.50x = 491,818.50 × 491,818.50
  4. Step 4: Simplify right side
    317,425.50x = 241,885,436,942.25
  5. Step 5: Solve for x
    x = 241,885,436,942.25/317,425.50
  6. Step 6: Final answer
    x = 762,022.70

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.