Home / 381,213.45-526,070.75-211,443.21

Finding the Fourth Proportional to 381,213.45, 526,070.75 and 211,443.21

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Solution

The fourth proportional to 381,213.45, 526,070.75 and 211,443.21 is: 291,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,213.45 : 526,070.75 = 211,443.21 : x
  2. Step 2: Convert to fraction form
    381,213.45/526,070.75 = 211,443.21/x
  3. Step 3: Cross multiply
    381,213.45x = 526,070.75 × 211,443.21
  4. Step 4: Simplify right side
    381,213.45x = 111,234,085,436.75
  5. Step 5: Solve for x
    x = 111,234,085,436.75/381,213.45
  6. Step 6: Final answer
    x = 291,789.51

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1.5x scale

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.