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Finding the Fourth Proportional to 667,108.35, 920,609.91 and 361,184.81

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Solution

The fourth proportional to 667,108.35, 920,609.91 and 361,184.81 is: 498,435.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,108.35 : 920,609.91 = 361,184.81 : x
  2. Step 2: Convert to fraction form
    667,108.35/920,609.91 = 361,184.81/x
  3. Step 3: Cross multiply
    667,108.35x = 920,609.91 × 361,184.81
  4. Step 4: Simplify right side
    667,108.35x = 332,510,310,824.42
  5. Step 5: Solve for x
    x = 332,510,310,824.42/667,108.35
  6. Step 6: Final answer
    x = 498,435.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.