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Finding the Fourth Proportional to 381,239.36, 526,054.56 and 220,068.80

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Solution

The fourth proportional to 381,239.36, 526,054.56 and 220,068.80 is: 303,662.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,239.36 : 526,054.56 = 220,068.80 : x
  2. Step 2: Convert to fraction form
    381,239.36/526,054.56 = 220,068.80/x
  3. Step 3: Cross multiply
    381,239.36x = 526,054.56 × 220,068.80
  4. Step 4: Simplify right side
    381,239.36x = 115,768,195,753.73
  5. Step 5: Solve for x
    x = 115,768,195,753.73/381,239.36
  6. Step 6: Final answer
    x = 303,662.76

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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.