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Finding the Fourth Proportional to 231,070.80, 346,759.80 and 131,230.80

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Solution

The fourth proportional to 231,070.80, 346,759.80 and 131,230.80 is: 196,933.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,070.80 : 346,759.80 = 131,230.80 : x
  2. Step 2: Convert to fraction form
    231,070.80/346,759.80 = 131,230.80/x
  3. Step 3: Cross multiply
    231,070.80x = 346,759.80 × 131,230.80
  4. Step 4: Simplify right side
    231,070.80x = 45,505,565,961.84
  5. Step 5: Solve for x
    x = 45,505,565,961.84/231,070.80
  6. Step 6: Final answer
    x = 196,933.43

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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.