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Finding the Third Proportional to 85,397.50 and 183,431

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Solution

The third proportional to 85,397.50 and 183,431 is: 394,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,397.50 : 183,431 = 183,431 : x
  2. Step 2: Convert to fraction form
    85,397.50/183,431 = 183,431/x
  3. Step 3: Cross multiply
    85,397.50x = 183,431 × 183,431
  4. Step 4: Simplify right side
    85,397.50x = 33,646,931,761
  5. Step 5: Solve for x
    x = 33,646,931,761/85,397.50
  6. Step 6: Final answer
    x = 394,003.71

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.