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Finding the Fourth Proportional to 381,695.72, 526,763.94 and 220,580.28

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Solution

The fourth proportional to 381,695.72, 526,763.94 and 220,580.28 is: 304,414.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,695.72 : 526,763.94 = 220,580.28 : x
  2. Step 2: Convert to fraction form
    381,695.72/526,763.94 = 220,580.28/x
  3. Step 3: Cross multiply
    381,695.72x = 526,763.94 × 220,580.28
  4. Step 4: Simplify right side
    381,695.72x = 116,193,737,379.10
  5. Step 5: Solve for x
    x = 116,193,737,379.10/381,695.72
  6. Step 6: Final answer
    x = 304,414.57

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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.