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Finding the Fourth Proportional to 239,479.11, 330,469.32 and 136,099.86

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Solution

The fourth proportional to 239,479.11, 330,469.32 and 136,099.86 is: 187,811.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,479.11 : 330,469.32 = 136,099.86 : x
  2. Step 2: Convert to fraction form
    239,479.11/330,469.32 = 136,099.86/x
  3. Step 3: Cross multiply
    239,479.11x = 330,469.32 × 136,099.86
  4. Step 4: Simplify right side
    239,479.11x = 44,976,828,186.30
  5. Step 5: Solve for x
    x = 44,976,828,186.30/239,479.11
  6. Step 6: Final answer
    x = 187,811.07

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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.