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Finding the Fourth Proportional to 445,072.83, 667,138.58 and 145,472.96

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Solution

The fourth proportional to 445,072.83, 667,138.58 and 145,472.96 is: 218,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,072.83 : 667,138.58 = 145,472.96 : x
  2. Step 2: Convert to fraction form
    445,072.83/667,138.58 = 145,472.96/x
  3. Step 3: Cross multiply
    445,072.83x = 667,138.58 × 145,472.96
  4. Step 4: Simplify right side
    445,072.83x = 97,050,625,448.80
  5. Step 5: Solve for x
    x = 97,050,625,448.80/445,072.83
  6. Step 6: Final answer
    x = 218,055.61

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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.