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Finding the Fourth Proportional to 395,371.62, 545,651.91 and 225,631.26

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Solution

The fourth proportional to 395,371.62, 545,651.91 and 225,631.26 is: 311,393.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,371.62 : 545,651.91 = 225,631.26 : x
  2. Step 2: Convert to fraction form
    395,371.62/545,651.91 = 225,631.26/x
  3. Step 3: Cross multiply
    395,371.62x = 545,651.91 × 225,631.26
  4. Step 4: Simplify right side
    395,371.62x = 123,116,127,974.71
  5. Step 5: Solve for x
    x = 123,116,127,974.71/395,371.62
  6. Step 6: Final answer
    x = 311,393.44

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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.