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Finding the Fourth Proportional to 381,791.64, 526,875.66 and 212,028.60

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Solution

The fourth proportional to 381,791.64, 526,875.66 and 212,028.60 is: 292,601.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,791.64 : 526,875.66 = 212,028.60 : x
  2. Step 2: Convert to fraction form
    381,791.64/526,875.66 = 212,028.60/x
  3. Step 3: Cross multiply
    381,791.64x = 526,875.66 × 212,028.60
  4. Step 4: Simplify right side
    381,791.64x = 111,712,708,563.88
  5. Step 5: Solve for x
    x = 111,712,708,563.88/381,791.64
  6. Step 6: Final answer
    x = 292,601.24

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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.