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Finding the Fourth Proportional to 318,487.88, 477,805.64 and 108,125.82

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Solution

The fourth proportional to 318,487.88, 477,805.64 and 108,125.82 is: 162,213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,487.88 : 477,805.64 = 108,125.82 : x
  2. Step 2: Convert to fraction form
    318,487.88/477,805.64 = 108,125.82/x
  3. Step 3: Cross multiply
    318,487.88x = 477,805.64 × 108,125.82
  4. Step 4: Simplify right side
    318,487.88x = 51,663,126,625.62
  5. Step 5: Solve for x
    x = 51,663,126,625.62/318,487.88
  6. Step 6: Final answer
    x = 162,213.79

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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.