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Finding the Fourth Proportional to 239,749.92, 357,801.84 and 213,178.56

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Solution

The fourth proportional to 239,749.92, 357,801.84 and 213,178.56 is: 318,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,749.92 : 357,801.84 = 213,178.56 : x
  2. Step 2: Convert to fraction form
    239,749.92/357,801.84 = 213,178.56/x
  3. Step 3: Cross multiply
    239,749.92x = 357,801.84 × 213,178.56
  4. Step 4: Simplify right side
    239,749.92x = 76,275,681,016.55
  5. Step 5: Solve for x
    x = 76,275,681,016.55/239,749.92
  6. Step 6: Final answer
    x = 318,146.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.