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Finding the Fourth Proportional to 521,843.33, 720,131.61 and 306,997.23

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Solution

The fourth proportional to 521,843.33, 720,131.61 and 306,997.23 is: 423,649.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,843.33 : 720,131.61 = 306,997.23 : x
  2. Step 2: Convert to fraction form
    521,843.33/720,131.61 = 306,997.23/x
  3. Step 3: Cross multiply
    521,843.33x = 720,131.61 × 306,997.23
  4. Step 4: Simplify right side
    521,843.33x = 221,078,409,505.44
  5. Step 5: Solve for x
    x = 221,078,409,505.44/521,843.33
  6. Step 6: Final answer
    x = 423,649.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.