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Finding the Fourth Proportional to 479,436.44, 661,638.17 and 261,657.02

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Solution

The fourth proportional to 479,436.44, 661,638.17 and 261,657.02 is: 361,095.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,436.44 : 661,638.17 = 261,657.02 : x
  2. Step 2: Convert to fraction form
    479,436.44/661,638.17 = 261,657.02/x
  3. Step 3: Cross multiply
    479,436.44x = 661,638.17 × 261,657.02
  4. Step 4: Simplify right side
    479,436.44x = 173,122,274,188.69
  5. Step 5: Solve for x
    x = 173,122,274,188.69/479,436.44
  6. Step 6: Final answer
    x = 361,095.36

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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.