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Finding the Fourth Proportional to 331,804.78, 457,930.14 and 209,474.92

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Solution

The fourth proportional to 331,804.78, 457,930.14 and 209,474.92 is: 289,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,804.78 : 457,930.14 = 209,474.92 : x
  2. Step 2: Convert to fraction form
    331,804.78/457,930.14 = 209,474.92/x
  3. Step 3: Cross multiply
    331,804.78x = 457,930.14 × 209,474.92
  4. Step 4: Simplify right side
    331,804.78x = 95,924,879,442.09
  5. Step 5: Solve for x
    x = 95,924,879,442.09/331,804.78
  6. Step 6: Final answer
    x = 289,100.35

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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.