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Finding the Fourth Proportional to 381,245.13, 526,135.50 and 211,479.39

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Solution

The fourth proportional to 381,245.13, 526,135.50 and 211,479.39 is: 291,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,245.13 : 526,135.50 = 211,479.39 : x
  2. Step 2: Convert to fraction form
    381,245.13/526,135.50 = 211,479.39/x
  3. Step 3: Cross multiply
    381,245.13x = 526,135.50 × 211,479.39
  4. Step 4: Simplify right side
    381,245.13x = 111,266,814,597.35
  5. Step 5: Solve for x
    x = 111,266,814,597.35/381,245.13
  6. Step 6: Final answer
    x = 291,851.11

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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.