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Finding the Fourth Proportional to 401,083.62, 553,442.82 and 239,879.88

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Solution

The fourth proportional to 401,083.62, 553,442.82 and 239,879.88 is: 331,002.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,083.62 : 553,442.82 = 239,879.88 : x
  2. Step 2: Convert to fraction form
    401,083.62/553,442.82 = 239,879.88/x
  3. Step 3: Cross multiply
    401,083.62x = 553,442.82 × 239,879.88
  4. Step 4: Simplify right side
    401,083.62x = 132,759,797,248.46
  5. Step 5: Solve for x
    x = 132,759,797,248.46/401,083.62
  6. Step 6: Final answer
    x = 331,002.79

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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.