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Finding the Fourth Proportional to 378,755.51, 568,133.91 and 303,333.75

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Solution

The fourth proportional to 378,755.51, 568,133.91 and 303,333.75 is: 455,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,755.51 : 568,133.91 = 303,333.75 : x
  2. Step 2: Convert to fraction form
    378,755.51/568,133.91 = 303,333.75/x
  3. Step 3: Cross multiply
    378,755.51x = 568,133.91 × 303,333.75
  4. Step 4: Simplify right side
    378,755.51x = 172,334,188,717.33
  5. Step 5: Solve for x
    x = 172,334,188,717.33/378,755.51
  6. Step 6: Final answer
    x = 455,001.14

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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.