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Finding the Fourth Proportional to 479,014.88, 661,010.30 and 274,922.15

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Solution

The fourth proportional to 479,014.88, 661,010.30 and 274,922.15 is: 379,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,014.88 : 661,010.30 = 274,922.15 : x
  2. Step 2: Convert to fraction form
    479,014.88/661,010.30 = 274,922.15/x
  3. Step 3: Cross multiply
    479,014.88x = 661,010.30 × 274,922.15
  4. Step 4: Simplify right side
    479,014.88x = 181,726,369,821.01
  5. Step 5: Solve for x
    x = 181,726,369,821.01/479,014.88
  6. Step 6: Final answer
    x = 379,375.21

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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.