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Finding the Fourth Proportional to 288,347.78, 397,953.52 and 239,863.96

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Solution

The fourth proportional to 288,347.78, 397,953.52 and 239,863.96 is: 331,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,347.78 : 397,953.52 = 239,863.96 : x
  2. Step 2: Convert to fraction form
    288,347.78/397,953.52 = 239,863.96/x
  3. Step 3: Cross multiply
    288,347.78x = 397,953.52 × 239,863.96
  4. Step 4: Simplify right side
    288,347.78x = 95,454,707,203.14
  5. Step 5: Solve for x
    x = 95,454,707,203.14/288,347.78
  6. Step 6: Final answer
    x = 331,040.20

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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.