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Finding the Fourth Proportional to 381,862.65, 526,911.87 and 220,686.57

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Solution

The fourth proportional to 381,862.65, 526,911.87 and 220,686.57 is: 304,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,862.65 : 526,911.87 = 220,686.57 : x
  2. Step 2: Convert to fraction form
    381,862.65/526,911.87 = 220,686.57/x
  3. Step 3: Cross multiply
    381,862.65x = 526,911.87 × 220,686.57
  4. Step 4: Simplify right side
    381,862.65x = 116,282,373,834.30
  5. Step 5: Solve for x
    x = 116,282,373,834.30/381,862.65
  6. Step 6: Final answer
    x = 304,513.61

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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.