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Finding the Fourth Proportional to 381,422.52, 526,409.69 and 220,277.37

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Solution

The fourth proportional to 381,422.52, 526,409.69 and 220,277.37 is: 304,009.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,422.52 : 526,409.69 = 220,277.37 : x
  2. Step 2: Convert to fraction form
    381,422.52/526,409.69 = 220,277.37/x
  3. Step 3: Cross multiply
    381,422.52x = 526,409.69 × 220,277.37
  4. Step 4: Simplify right side
    381,422.52x = 115,956,142,928.37
  5. Step 5: Solve for x
    x = 115,956,142,928.37/381,422.52
  6. Step 6: Final answer
    x = 304,009.69

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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.