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Finding the Fourth Proportional to 394,659.40, 591,989.10 and 173,043.40

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Solution

The fourth proportional to 394,659.40, 591,989.10 and 173,043.40 is: 259,565.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,659.40 : 591,989.10 = 173,043.40 : x
  2. Step 2: Convert to fraction form
    394,659.40/591,989.10 = 173,043.40/x
  3. Step 3: Cross multiply
    394,659.40x = 591,989.10 × 173,043.40
  4. Step 4: Simplify right side
    394,659.40x = 102,439,806,626.94
  5. Step 5: Solve for x
    x = 102,439,806,626.94/394,659.40
  6. Step 6: Final answer
    x = 259,565.10

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Similar ratio
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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.