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Finding the Fourth Proportional to 397,178.93, 548,232.31 and 253,939.54

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Solution

The fourth proportional to 397,178.93, 548,232.31 and 253,939.54 is: 350,516.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,178.93 : 548,232.31 = 253,939.54 : x
  2. Step 2: Convert to fraction form
    397,178.93/548,232.31 = 253,939.54/x
  3. Step 3: Cross multiply
    397,178.93x = 548,232.31 × 253,939.54
  4. Step 4: Simplify right side
    397,178.93x = 139,217,860,614.54
  5. Step 5: Solve for x
    x = 139,217,860,614.54/397,178.93
  6. Step 6: Final answer
    x = 350,516.73

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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.