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Finding the Fourth Proportional to 303,178.88, 418,388.85 and 167,216.51

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Solution

The fourth proportional to 303,178.88, 418,388.85 and 167,216.51 is: 230,759.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,178.88 : 418,388.85 = 167,216.51 : x
  2. Step 2: Convert to fraction form
    303,178.88/418,388.85 = 167,216.51/x
  3. Step 3: Cross multiply
    303,178.88x = 418,388.85 × 167,216.51
  4. Step 4: Simplify right side
    303,178.88x = 69,961,524,365.89
  5. Step 5: Solve for x
    x = 69,961,524,365.89/303,178.88
  6. Step 6: Final answer
    x = 230,759.89

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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.