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Finding the Fourth Proportional to 479,442.38, 661,646.34 and 261,662.94

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Solution

The fourth proportional to 479,442.38, 661,646.34 and 261,662.94 is: 361,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,442.38 : 661,646.34 = 261,662.94 : x
  2. Step 2: Convert to fraction form
    479,442.38/661,646.34 = 261,662.94/x
  3. Step 3: Cross multiply
    479,442.38x = 661,646.34 × 261,662.94
  4. Step 4: Simplify right side
    479,442.38x = 173,128,326,564.64
  5. Step 5: Solve for x
    x = 173,128,326,564.64/479,442.38
  6. Step 6: Final answer
    x = 361,103.51

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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.