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Finding the Third Proportional to 187,266 and 280,611

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Solution

The third proportional to 187,266 and 280,611 is: 420,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,266 : 280,611 = 280,611 : x
  2. Step 2: Convert to fraction form
    187,266/280,611 = 280,611/x
  3. Step 3: Cross multiply
    187,266x = 280,611 × 280,611
  4. Step 4: Simplify right side
    187,266x = 78,742,533,321
  5. Step 5: Solve for x
    x = 78,742,533,321/187,266
  6. Step 6: Final answer
    x = 420,484.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.