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Finding the Fourth Proportional to 381,534.88, 526,542.78 and 220,396.72

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Solution

The fourth proportional to 381,534.88, 526,542.78 and 220,396.72 is: 304,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,534.88 : 526,542.78 = 220,396.72 : x
  2. Step 2: Convert to fraction form
    381,534.88/526,542.78 = 220,396.72/x
  3. Step 3: Cross multiply
    381,534.88x = 526,542.78 × 220,396.72
  4. Step 4: Simplify right side
    381,534.88x = 116,048,301,651.68
  5. Step 5: Solve for x
    x = 116,048,301,651.68/381,534.88
  6. Step 6: Final answer
    x = 304,161.71

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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.