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Finding the Fourth Proportional to 318,483.75, 477,799.44 and 108,121.69

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Solution

The fourth proportional to 318,483.75, 477,799.44 and 108,121.69 is: 162,207.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,483.75 : 477,799.44 = 108,121.69 : x
  2. Step 2: Convert to fraction form
    318,483.75/477,799.44 = 108,121.69/x
  3. Step 3: Cross multiply
    318,483.75x = 477,799.44 × 108,121.69
  4. Step 4: Simplify right side
    318,483.75x = 51,660,481,739.36
  5. Step 5: Solve for x
    x = 51,660,481,739.36/318,483.75
  6. Step 6: Final answer
    x = 162,207.59

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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.