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Finding the Third Proportional to 285,643.50 and 419,625

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Solution

The third proportional to 285,643.50 and 419,625 is: 616,450.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,643.50 : 419,625 = 419,625 : x
  2. Step 2: Convert to fraction form
    285,643.50/419,625 = 419,625/x
  3. Step 3: Cross multiply
    285,643.50x = 419,625 × 419,625
  4. Step 4: Simplify right side
    285,643.50x = 176,085,140,625
  5. Step 5: Solve for x
    x = 176,085,140,625/285,643.50
  6. Step 6: Final answer
    x = 616,450.72

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.