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Finding the Fourth Proportional to 239,818.40, 330,969.36 and 132,398.24

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Solution

The fourth proportional to 239,818.40, 330,969.36 and 132,398.24 is: 182,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,818.40 : 330,969.36 = 132,398.24 : x
  2. Step 2: Convert to fraction form
    239,818.40/330,969.36 = 132,398.24/x
  3. Step 3: Cross multiply
    239,818.40x = 330,969.36 × 132,398.24
  4. Step 4: Simplify right side
    239,818.40x = 43,819,760,757.93
  5. Step 5: Solve for x
    x = 43,819,760,757.93/239,818.40
  6. Step 6: Final answer
    x = 182,720.60

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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.