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Finding the Fourth Proportional to 394,813.29, 592,261.44 and 128,594.55

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Solution

The fourth proportional to 394,813.29, 592,261.44 and 128,594.55 is: 192,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,813.29 : 592,261.44 = 128,594.55 : x
  2. Step 2: Convert to fraction form
    394,813.29/592,261.44 = 128,594.55/x
  3. Step 3: Cross multiply
    394,813.29x = 592,261.44 × 128,594.55
  4. Step 4: Simplify right side
    394,813.29x = 76,161,593,359.15
  5. Step 5: Solve for x
    x = 76,161,593,359.15/394,813.29
  6. Step 6: Final answer
    x = 192,905.34

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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.