Home / 381,145.20-526,012.68-211,434

Finding the Fourth Proportional to 381,145.20, 526,012.68 and 211,434

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Solution

The fourth proportional to 381,145.20, 526,012.68 and 211,434 is: 291,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,145.20 : 526,012.68 = 211,434 : x
  2. Step 2: Convert to fraction form
    381,145.20/526,012.68 = 211,434/x
  3. Step 3: Cross multiply
    381,145.20x = 526,012.68 × 211,434
  4. Step 4: Simplify right side
    381,145.20x = 111,216,964,983.12
  5. Step 5: Solve for x
    x = 111,216,964,983.12/381,145.20
  6. Step 6: Final answer
    x = 291,796.84

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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.