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Finding the Fourth Proportional to 483,229.76, 666,872.34 and 289,573.66

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Solution

The fourth proportional to 483,229.76, 666,872.34 and 289,573.66 is: 399,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,229.76 : 666,872.34 = 289,573.66 : x
  2. Step 2: Convert to fraction form
    483,229.76/666,872.34 = 289,573.66/x
  3. Step 3: Cross multiply
    483,229.76x = 666,872.34 × 289,573.66
  4. Step 4: Simplify right side
    483,229.76x = 193,108,660,912.20
  5. Step 5: Solve for x
    x = 193,108,660,912.20/483,229.76
  6. Step 6: Final answer
    x = 399,620.80

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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.