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Finding the Third Proportional to 260,068 and 408,073

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Solution

The third proportional to 260,068 and 408,073 is: 640,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,068 : 408,073 = 408,073 : x
  2. Step 2: Convert to fraction form
    260,068/408,073 = 408,073/x
  3. Step 3: Cross multiply
    260,068x = 408,073 × 408,073
  4. Step 4: Simplify right side
    260,068x = 166,523,573,329
  5. Step 5: Solve for x
    x = 166,523,573,329/260,068
  6. Step 6: Final answer
    x = 640,307.82

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.