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Finding the Fourth Proportional to 379,408.50, 568,836.07 and 219,258.68

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Solution

The fourth proportional to 379,408.50, 568,836.07 and 219,258.68 is: 328,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,408.50 : 568,836.07 = 219,258.68 : x
  2. Step 2: Convert to fraction form
    379,408.50/568,836.07 = 219,258.68/x
  3. Step 3: Cross multiply
    379,408.50x = 568,836.07 × 219,258.68
  4. Step 4: Simplify right side
    379,408.50x = 124,722,242,452.26
  5. Step 5: Solve for x
    x = 124,722,242,452.26/379,408.50
  6. Step 6: Final answer
    x = 328,728.12

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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.