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Finding the Fourth Proportional to 381,794.10, 526,845.12 and 220,659.58

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Solution

The fourth proportional to 381,794.10, 526,845.12 and 220,659.58 is: 304,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,794.10 : 526,845.12 = 220,659.58 : x
  2. Step 2: Convert to fraction form
    381,794.10/526,845.12 = 220,659.58/x
  3. Step 3: Cross multiply
    381,794.10x = 526,845.12 × 220,659.58
  4. Step 4: Simplify right side
    381,794.10x = 116,253,422,904.25
  5. Step 5: Solve for x
    x = 116,253,422,904.25/381,794.10
  6. Step 6: Final answer
    x = 304,492.46

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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.