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Finding the Fourth Proportional to 381,149.46, 526,007.34 and 211,379.94

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Solution

The fourth proportional to 381,149.46, 526,007.34 and 211,379.94 is: 291,716.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,149.46 : 526,007.34 = 211,379.94 : x
  2. Step 2: Convert to fraction form
    381,149.46/526,007.34 = 211,379.94/x
  3. Step 3: Cross multiply
    381,149.46x = 526,007.34 × 211,379.94
  4. Step 4: Simplify right side
    381,149.46x = 111,187,399,968.76
  5. Step 5: Solve for x
    x = 111,187,399,968.76/381,149.46
  6. Step 6: Final answer
    x = 291,716.01

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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.