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Finding the Fourth Proportional to 381,186.63, 526,100.54 and 211,475.43

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Solution

The fourth proportional to 381,186.63, 526,100.54 and 211,475.43 is: 291,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,186.63 : 526,100.54 = 211,475.43 : x
  2. Step 2: Convert to fraction form
    381,186.63/526,100.54 = 211,475.43/x
  3. Step 3: Cross multiply
    381,186.63x = 526,100.54 × 211,475.43
  4. Step 4: Simplify right side
    381,186.63x = 111,257,336,862.36
  5. Step 5: Solve for x
    x = 111,257,336,862.36/381,186.63
  6. Step 6: Final answer
    x = 291,871.04

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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.