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Finding the Fourth Proportional to 318,860.28, 478,317.96 and 82,200.96

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Solution

The fourth proportional to 318,860.28, 478,317.96 and 82,200.96 is: 123,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,860.28 : 478,317.96 = 82,200.96 : x
  2. Step 2: Convert to fraction form
    318,860.28/478,317.96 = 82,200.96/x
  3. Step 3: Cross multiply
    318,860.28x = 478,317.96 × 82,200.96
  4. Step 4: Simplify right side
    318,860.28x = 39,318,195,497.24
  5. Step 5: Solve for x
    x = 39,318,195,497.24/318,860.28
  6. Step 6: Final answer
    x = 123,308.54

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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.