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Finding the Fourth Proportional to 378,650.40, 568,436.40 and 191,565.60

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Solution

The fourth proportional to 378,650.40, 568,436.40 and 191,565.60 is: 287,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,650.40 : 568,436.40 = 191,565.60 : x
  2. Step 2: Convert to fraction form
    378,650.40/568,436.40 = 191,565.60/x
  3. Step 3: Cross multiply
    378,650.40x = 568,436.40 × 191,565.60
  4. Step 4: Simplify right side
    378,650.40x = 108,892,860,027.84
  5. Step 5: Solve for x
    x = 108,892,860,027.84/378,650.40
  6. Step 6: Final answer
    x = 287,581.53

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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.