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Finding the Third Proportional to 187,805.25 and 290,820.38

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Solution

The third proportional to 187,805.25 and 290,820.38 is: 450,341.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,805.25 : 290,820.38 = 290,820.38 : x
  2. Step 2: Convert to fraction form
    187,805.25/290,820.38 = 290,820.38/x
  3. Step 3: Cross multiply
    187,805.25x = 290,820.38 × 290,820.38
  4. Step 4: Simplify right side
    187,805.25x = 84,576,490,515.14
  5. Step 5: Solve for x
    x = 84,576,490,515.14/187,805.25
  6. Step 6: Final answer
    x = 450,341.46

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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.