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Finding the Fourth Proportional to 318,487.88, 477,805.63 and 108,125.81

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Solution

The fourth proportional to 318,487.88, 477,805.63 and 108,125.81 is: 162,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,487.88 : 477,805.63 = 108,125.81 : x
  2. Step 2: Convert to fraction form
    318,487.88/477,805.63 = 108,125.81/x
  3. Step 3: Cross multiply
    318,487.88x = 477,805.63 × 108,125.81
  4. Step 4: Simplify right side
    318,487.88x = 51,663,120,766.31
  5. Step 5: Solve for x
    x = 51,663,120,766.31/318,487.88
  6. Step 6: Final answer
    x = 162,213.77

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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.