Home / 381,884.13-527,016.78-212,118.26

Finding the Fourth Proportional to 381,884.13, 527,016.78 and 212,118.26

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Solution

The fourth proportional to 381,884.13, 527,016.78 and 212,118.26 is: 292,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,884.13 : 527,016.78 = 212,118.26 : x
  2. Step 2: Convert to fraction form
    381,884.13/527,016.78 = 212,118.26/x
  3. Step 3: Cross multiply
    381,884.13x = 527,016.78 × 212,118.26
  4. Step 4: Simplify right side
    381,884.13x = 111,789,879,729.32
  5. Step 5: Solve for x
    x = 111,789,879,729.32/381,884.13
  6. Step 6: Final answer
    x = 292,732.46

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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.