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Finding the Fourth Proportional to 479,592.41, 661,845.65 and 261,812.32

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Solution

The fourth proportional to 479,592.41, 661,845.65 and 261,812.32 is: 361,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,592.41 : 661,845.65 = 261,812.32 : x
  2. Step 2: Convert to fraction form
    479,592.41/661,845.65 = 261,812.32/x
  3. Step 3: Cross multiply
    479,592.41x = 661,845.65 × 261,812.32
  4. Step 4: Simplify right side
    479,592.41x = 173,279,340,490.12
  5. Step 5: Solve for x
    x = 173,279,340,490.12/479,592.41
  6. Step 6: Final answer
    x = 361,305.43

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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.