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Finding the Fourth Proportional to 399,859.37, 599,826.65 and 147,144.69

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Solution

The fourth proportional to 399,859.37, 599,826.65 and 147,144.69 is: 220,730.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,859.37 : 599,826.65 = 147,144.69 : x
  2. Step 2: Convert to fraction form
    399,859.37/599,826.65 = 147,144.69/x
  3. Step 3: Cross multiply
    399,859.37x = 599,826.65 × 147,144.69
  4. Step 4: Simplify right side
    399,859.37x = 88,261,305,732.27
  5. Step 5: Solve for x
    x = 88,261,305,732.27/399,859.37
  6. Step 6: Final answer
    x = 220,730.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.