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Finding the Fourth Proportional to 239,335.68, 330,269.80 and 131,905.40

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Solution

The fourth proportional to 239,335.68, 330,269.80 and 131,905.40 is: 182,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,335.68 : 330,269.80 = 131,905.40 : x
  2. Step 2: Convert to fraction form
    239,335.68/330,269.80 = 131,905.40/x
  3. Step 3: Cross multiply
    239,335.68x = 330,269.80 × 131,905.40
  4. Step 4: Simplify right side
    239,335.68x = 43,564,370,076.92
  5. Step 5: Solve for x
    x = 43,564,370,076.92/239,335.68
  6. Step 6: Final answer
    x = 182,022.05

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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.