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Finding the Fourth Proportional to 288,340.78, 397,943.84 and 239,856.96

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Solution

The fourth proportional to 288,340.78, 397,943.84 and 239,856.96 is: 331,030.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,340.78 : 397,943.84 = 239,856.96 : x
  2. Step 2: Convert to fraction form
    288,340.78/397,943.84 = 239,856.96/x
  3. Step 3: Cross multiply
    288,340.78x = 397,943.84 × 239,856.96
  4. Step 4: Simplify right side
    288,340.78x = 95,449,600,455.86
  5. Step 5: Solve for x
    x = 95,449,600,455.86/288,340.78
  6. Step 6: Final answer
    x = 331,030.53

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1.5x scale

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.