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Finding the Fourth Proportional to 381,814.64, 526,840.94 and 220,684.72

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Solution

The fourth proportional to 381,814.64, 526,840.94 and 220,684.72 is: 304,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,814.64 : 526,840.94 = 220,684.72 : x
  2. Step 2: Convert to fraction form
    381,814.64/526,840.94 = 220,684.72/x
  3. Step 3: Cross multiply
    381,814.64x = 526,840.94 × 220,684.72
  4. Step 4: Simplify right side
    381,814.64x = 116,265,745,328.44
  5. Step 5: Solve for x
    x = 116,265,745,328.44/381,814.64
  6. Step 6: Final answer
    x = 304,508.35

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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.