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Finding the Fourth Proportional to 381,864.68, 526,958.52 and 212,109.56

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Solution

The fourth proportional to 381,864.68, 526,958.52 and 212,109.56 is: 292,703.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,864.68 : 526,958.52 = 212,109.56 : x
  2. Step 2: Convert to fraction form
    381,864.68/526,958.52 = 212,109.56/x
  3. Step 3: Cross multiply
    381,864.68x = 526,958.52 × 212,109.56
  4. Step 4: Simplify right side
    381,864.68x = 111,772,939,815.45
  5. Step 5: Solve for x
    x = 111,772,939,815.45/381,864.68
  6. Step 6: Final answer
    x = 292,703.01

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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.