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Finding the Fourth Proportional to 381,793.37, 526,860.42 and 212,038.43

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Solution

The fourth proportional to 381,793.37, 526,860.42 and 212,038.43 is: 292,605.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,793.37 : 526,860.42 = 212,038.43 : x
  2. Step 2: Convert to fraction form
    381,793.37/526,860.42 = 212,038.43/x
  3. Step 3: Cross multiply
    381,793.37x = 526,860.42 × 212,038.43
  4. Step 4: Simplify right side
    381,793.37x = 111,714,653,651.64
  5. Step 5: Solve for x
    x = 111,714,653,651.64/381,793.37
  6. Step 6: Final answer
    x = 292,605.02

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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.