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Finding the Fourth Proportional to 378,294.66, 522,050.22 and 208,534.86

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Solution

The fourth proportional to 378,294.66, 522,050.22 and 208,534.86 is: 287,780.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,294.66 : 522,050.22 = 208,534.86 : x
  2. Step 2: Convert to fraction form
    378,294.66/522,050.22 = 208,534.86/x
  3. Step 3: Cross multiply
    378,294.66x = 522,050.22 × 208,534.86
  4. Step 4: Simplify right side
    378,294.66x = 108,865,669,540.67
  5. Step 5: Solve for x
    x = 108,865,669,540.67/378,294.66
  6. Step 6: Final answer
    x = 287,780.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.