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Finding the Fourth Proportional to 381,790.48, 526,886.76 and 212,026

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Solution

The fourth proportional to 381,790.48, 526,886.76 and 212,026 is: 292,604.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,790.48 : 526,886.76 = 212,026 : x
  2. Step 2: Convert to fraction form
    381,790.48/526,886.76 = 212,026/x
  3. Step 3: Cross multiply
    381,790.48x = 526,886.76 × 212,026
  4. Step 4: Simplify right side
    381,790.48x = 111,713,692,175.76
  5. Step 5: Solve for x
    x = 111,713,692,175.76/381,790.48
  6. Step 6: Final answer
    x = 292,604.71

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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.