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Finding the Fourth Proportional to 251,485.36, 377,218.22 and 85,273.36

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Solution

The fourth proportional to 251,485.36, 377,218.22 and 85,273.36 is: 127,906.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,485.36 : 377,218.22 = 85,273.36 : x
  2. Step 2: Convert to fraction form
    251,485.36/377,218.22 = 85,273.36/x
  3. Step 3: Cross multiply
    251,485.36x = 377,218.22 × 85,273.36
  4. Step 4: Simplify right side
    251,485.36x = 32,166,665,072.62
  5. Step 5: Solve for x
    x = 32,166,665,072.62/251,485.36
  6. Step 6: Final answer
    x = 127,906.71

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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.