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Finding the Fourth Proportional to 445,108.32, 667,771.92 and 129,567.96

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Solution

The fourth proportional to 445,108.32, 667,771.92 and 129,567.96 is: 194,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,108.32 : 667,771.92 = 129,567.96 : x
  2. Step 2: Convert to fraction form
    445,108.32/667,771.92 = 129,567.96/x
  3. Step 3: Cross multiply
    445,108.32x = 667,771.92 × 129,567.96
  4. Step 4: Simplify right side
    445,108.32x = 86,521,845,419.68
  5. Step 5: Solve for x
    x = 86,521,845,419.68/445,108.32
  6. Step 6: Final answer
    x = 194,383.80

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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.