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Finding the Fourth Proportional to 381,725.08, 526,822.72 and 218,396.76

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Solution

The fourth proportional to 381,725.08, 526,822.72 and 218,396.76 is: 301,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,725.08 : 526,822.72 = 218,396.76 : x
  2. Step 2: Convert to fraction form
    381,725.08/526,822.72 = 218,396.76/x
  3. Step 3: Cross multiply
    381,725.08x = 526,822.72 × 218,396.76
  4. Step 4: Simplify right side
    381,725.08x = 115,056,375,142.39
  5. Step 5: Solve for x
    x = 115,056,375,142.39/381,725.08
  6. Step 6: Final answer
    x = 301,411.62

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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.