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Finding the Fourth Proportional to 445,079.52, 667,660.32 and 145,561.68

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Solution

The fourth proportional to 445,079.52, 667,660.32 and 145,561.68 is: 218,355.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,079.52 : 667,660.32 = 145,561.68 : x
  2. Step 2: Convert to fraction form
    445,079.52/667,660.32 = 145,561.68/x
  3. Step 3: Cross multiply
    445,079.52x = 667,660.32 × 145,561.68
  4. Step 4: Simplify right side
    445,079.52x = 97,185,757,848.54
  5. Step 5: Solve for x
    x = 97,185,757,848.54/445,079.52
  6. Step 6: Final answer
    x = 218,355.94

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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.