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Finding the Fourth Proportional to 381,585.36, 526,587.30 and 211,819.08

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Solution

The fourth proportional to 381,585.36, 526,587.30 and 211,819.08 is: 292,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,585.36 : 526,587.30 = 211,819.08 : x
  2. Step 2: Convert to fraction form
    381,585.36/526,587.30 = 211,819.08/x
  3. Step 3: Cross multiply
    381,585.36x = 526,587.30 × 211,819.08
  4. Step 4: Simplify right side
    381,585.36x = 111,541,237,425.68
  5. Step 5: Solve for x
    x = 111,541,237,425.68/381,585.36
  6. Step 6: Final answer
    x = 292,310.05

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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.