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Finding the Fourth Proportional to 324,363.28, 486,591.48 and 99,742.60

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Solution

The fourth proportional to 324,363.28, 486,591.48 and 99,742.60 is: 149,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,363.28 : 486,591.48 = 99,742.60 : x
  2. Step 2: Convert to fraction form
    324,363.28/486,591.48 = 99,742.60/x
  3. Step 3: Cross multiply
    324,363.28x = 486,591.48 × 99,742.60
  4. Step 4: Simplify right side
    324,363.28x = 48,533,899,353.05
  5. Step 5: Solve for x
    x = 48,533,899,353.05/324,363.28
  6. Step 6: Final answer
    x = 149,628.22

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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.