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Finding the Fourth Proportional to 394,056.69, 591,168.06 and 127,796.44

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Solution

The fourth proportional to 394,056.69, 591,168.06 and 127,796.44 is: 191,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,056.69 : 591,168.06 = 127,796.44 : x
  2. Step 2: Convert to fraction form
    394,056.69/591,168.06 = 127,796.44/x
  3. Step 3: Cross multiply
    394,056.69x = 591,168.06 × 127,796.44
  4. Step 4: Simplify right side
    394,056.69x = 75,549,173,509.71
  5. Step 5: Solve for x
    x = 75,549,173,509.71/394,056.69
  6. Step 6: Final answer
    x = 191,721.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.