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Finding the Fourth Proportional to 379,259.82, 568,911.58 and 142,604.55

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Solution

The fourth proportional to 379,259.82, 568,911.58 and 142,604.55 is: 213,915.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,259.82 : 568,911.58 = 142,604.55 : x
  2. Step 2: Convert to fraction form
    379,259.82/568,911.58 = 142,604.55/x
  3. Step 3: Cross multiply
    379,259.82x = 568,911.58 × 142,604.55
  4. Step 4: Simplify right side
    379,259.82x = 81,129,380,301.33
  5. Step 5: Solve for x
    x = 81,129,380,301.33/379,259.82
  6. Step 6: Final answer
    x = 213,915.04

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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.