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Finding the Fourth Proportional to 548,516.48, 756,942.72 and 310,052.48

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Solution

The fourth proportional to 548,516.48, 756,942.72 and 310,052.48 is: 427,866.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,516.48 : 756,942.72 = 310,052.48 : x
  2. Step 2: Convert to fraction form
    548,516.48/756,942.72 = 310,052.48/x
  3. Step 3: Cross multiply
    548,516.48x = 756,942.72 × 310,052.48
  4. Step 4: Simplify right side
    548,516.48x = 234,691,967,553.95
  5. Step 5: Solve for x
    x = 234,691,967,553.95/548,516.48
  6. Step 6: Final answer
    x = 427,866.76

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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.