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Finding the Fourth Proportional to 381,383.46, 526,307.49 and 211,617.18

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Solution

The fourth proportional to 381,383.46, 526,307.49 and 211,617.18 is: 292,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,383.46 : 526,307.49 = 211,617.18 : x
  2. Step 2: Convert to fraction form
    381,383.46/526,307.49 = 211,617.18/x
  3. Step 3: Cross multiply
    381,383.46x = 526,307.49 × 211,617.18
  4. Step 4: Simplify right side
    381,383.46x = 111,375,706,846.68
  5. Step 5: Solve for x
    x = 111,375,706,846.68/381,383.46
  6. Step 6: Final answer
    x = 292,030.77

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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.