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Finding the Fourth Proportional to 394,496.40, 591,821.40 and 169,856.40

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Solution

The fourth proportional to 394,496.40, 591,821.40 and 169,856.40 is: 254,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,496.40 : 591,821.40 = 169,856.40 : x
  2. Step 2: Convert to fraction form
    394,496.40/591,821.40 = 169,856.40/x
  3. Step 3: Cross multiply
    394,496.40x = 591,821.40 × 169,856.40
  4. Step 4: Simplify right side
    394,496.40x = 100,524,652,446.96
  5. Step 5: Solve for x
    x = 100,524,652,446.96/394,496.40
  6. Step 6: Final answer
    x = 254,817.67

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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.