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Finding the Fourth Proportional to 445,169.42, 667,748.10 and 108,209.12

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Solution

The fourth proportional to 445,169.42, 667,748.10 and 108,209.12 is: 162,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,169.42 : 667,748.10 = 108,209.12 : x
  2. Step 2: Convert to fraction form
    445,169.42/667,748.10 = 108,209.12/x
  3. Step 3: Cross multiply
    445,169.42x = 667,748.10 × 108,209.12
  4. Step 4: Simplify right side
    445,169.42x = 72,256,431,349.72
  5. Step 5: Solve for x
    x = 72,256,431,349.72/445,169.42
  6. Step 6: Final answer
    x = 162,312.21

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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.