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Finding the Fourth Proportional to 239,642.40, 330,707.62 and 132,212.40

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Solution

The fourth proportional to 239,642.40, 330,707.62 and 132,212.40 is: 182,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,642.40 : 330,707.62 = 132,212.40 : x
  2. Step 2: Convert to fraction form
    239,642.40/330,707.62 = 132,212.40/x
  3. Step 3: Cross multiply
    239,642.40x = 330,707.62 × 132,212.40
  4. Step 4: Simplify right side
    239,642.40x = 43,723,648,138.49
  5. Step 5: Solve for x
    x = 43,723,648,138.49/239,642.40
  6. Step 6: Final answer
    x = 182,453.72

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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.