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Finding the Fourth Proportional to 381,238.36, 526,053.18 and 220,067.80

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Solution

The fourth proportional to 381,238.36, 526,053.18 and 220,067.80 is: 303,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,238.36 : 526,053.18 = 220,067.80 : x
  2. Step 2: Convert to fraction form
    381,238.36/526,053.18 = 220,067.80/x
  3. Step 3: Cross multiply
    381,238.36x = 526,053.18 × 220,067.80
  4. Step 4: Simplify right side
    381,238.36x = 115,767,366,005.60
  5. Step 5: Solve for x
    x = 115,767,366,005.60/381,238.36
  6. Step 6: Final answer
    x = 303,661.38

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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.