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Finding the Fourth Proportional to 381,852, 526,955.94 and 212,087.52

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Solution

The fourth proportional to 381,852, 526,955.94 and 212,087.52 is: 292,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,852 : 526,955.94 = 212,087.52 : x
  2. Step 2: Convert to fraction form
    381,852/526,955.94 = 212,087.52/x
  3. Step 3: Cross multiply
    381,852x = 526,955.94 × 212,087.52
  4. Step 4: Simplify right side
    381,852x = 111,760,778,463.87
  5. Step 5: Solve for x
    x = 111,760,778,463.87/381,852
  6. Step 6: Final answer
    x = 292,680.88

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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.