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Finding the Fourth Proportional to 380,679.75, 571,019.63 and 131,361.75

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Solution

The fourth proportional to 380,679.75, 571,019.63 and 131,361.75 is: 197,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,679.75 : 571,019.63 = 131,361.75 : x
  2. Step 2: Convert to fraction form
    380,679.75/571,019.63 = 131,361.75/x
  3. Step 3: Cross multiply
    380,679.75x = 571,019.63 × 131,361.75
  4. Step 4: Simplify right side
    380,679.75x = 75,010,137,224.34
  5. Step 5: Solve for x
    x = 75,010,137,224.34/380,679.75
  6. Step 6: Final answer
    x = 197,042.63

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Similar ratio
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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.