Home / 231,431.72-347,022.70-105,002.96

Finding the Fourth Proportional to 231,431.72, 347,022.70 and 105,002.96

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Solution

The fourth proportional to 231,431.72, 347,022.70 and 105,002.96 is: 157,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,431.72 : 347,022.70 = 105,002.96 : x
  2. Step 2: Convert to fraction form
    231,431.72/347,022.70 = 105,002.96/x
  3. Step 3: Cross multiply
    231,431.72x = 347,022.70 × 105,002.96
  4. Step 4: Simplify right side
    231,431.72x = 36,438,410,687.19
  5. Step 5: Solve for x
    x = 36,438,410,687.19/231,431.72
  6. Step 6: Final answer
    x = 157,447.78

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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.