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Finding the Fourth Proportional to 378,989.67, 568,327.15 and 154,197.51

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Solution

The fourth proportional to 378,989.67, 568,327.15 and 154,197.51 is: 231,232.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,989.67 : 568,327.15 = 154,197.51 : x
  2. Step 2: Convert to fraction form
    378,989.67/568,327.15 = 154,197.51/x
  3. Step 3: Cross multiply
    378,989.67x = 568,327.15 × 154,197.51
  4. Step 4: Simplify right side
    378,989.67x = 87,634,631,204.03
  5. Step 5: Solve for x
    x = 87,634,631,204.03/378,989.67
  6. Step 6: Final answer
    x = 231,232.24

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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.