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Finding the Fourth Proportional to 533,645.79, 800,353.56 and 168,936.21

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Solution

The fourth proportional to 533,645.79, 800,353.56 and 168,936.21 is: 253,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,645.79 : 800,353.56 = 168,936.21 : x
  2. Step 2: Convert to fraction form
    533,645.79/800,353.56 = 168,936.21/x
  3. Step 3: Cross multiply
    533,645.79x = 800,353.56 × 168,936.21
  4. Step 4: Simplify right side
    533,645.79x = 135,208,697,086.41
  5. Step 5: Solve for x
    x = 135,208,697,086.41/533,645.79
  6. Step 6: Final answer
    x = 253,367.87

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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.