Home / 381,218.88-526,145.04-211,507.68

Finding the Fourth Proportional to 381,218.88, 526,145.04 and 211,507.68

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Solution

The fourth proportional to 381,218.88, 526,145.04 and 211,507.68 is: 291,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,218.88 : 526,145.04 = 211,507.68 : x
  2. Step 2: Convert to fraction form
    381,218.88/526,145.04 = 211,507.68/x
  3. Step 3: Cross multiply
    381,218.88x = 526,145.04 × 211,507.68
  4. Step 4: Simplify right side
    381,218.88x = 111,283,716,753.91
  5. Step 5: Solve for x
    x = 111,283,716,753.91/381,218.88
  6. Step 6: Final answer
    x = 291,915.54

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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.