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Finding the Fourth Proportional to 445,074.33, 667,140.83 and 145,474.47

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Solution

The fourth proportional to 445,074.33, 667,140.83 and 145,474.47 is: 218,057.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,074.33 : 667,140.83 = 145,474.47 : x
  2. Step 2: Convert to fraction form
    445,074.33/667,140.83 = 145,474.47/x
  3. Step 3: Cross multiply
    445,074.33x = 667,140.83 × 145,474.47
  4. Step 4: Simplify right side
    445,074.33x = 97,051,957,932.24
  5. Step 5: Solve for x
    x = 97,051,957,932.24/445,074.33
  6. Step 6: Final answer
    x = 218,057.86

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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.