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Finding the Fourth Proportional to 381,566.70, 526,586.94 and 220,428.54

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Solution

The fourth proportional to 381,566.70, 526,586.94 and 220,428.54 is: 304,205.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,566.70 : 526,586.94 = 220,428.54 : x
  2. Step 2: Convert to fraction form
    381,566.70/526,586.94 = 220,428.54/x
  3. Step 3: Cross multiply
    381,566.70x = 526,586.94 × 220,428.54
  4. Step 4: Simplify right side
    381,566.70x = 116,074,790,367.27
  5. Step 5: Solve for x
    x = 116,074,790,367.27/381,566.70
  6. Step 6: Final answer
    x = 304,205.77

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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.