Home / 381,440.58-571,938.39-115,121.22

Finding the Fourth Proportional to 381,440.58, 571,938.39 and 115,121.22

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Solution

The fourth proportional to 381,440.58, 571,938.39 and 115,121.22 is: 172,614.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,440.58 : 571,938.39 = 115,121.22 : x
  2. Step 2: Convert to fraction form
    381,440.58/571,938.39 = 115,121.22/x
  3. Step 3: Cross multiply
    381,440.58x = 571,938.39 × 115,121.22
  4. Step 4: Simplify right side
    381,440.58x = 65,842,245,221.64
  5. Step 5: Solve for x
    x = 65,842,245,221.64/381,440.58
  6. Step 6: Final answer
    x = 172,614.68

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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.