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Finding the Fourth Proportional to 324,359.28, 486,585.48 and 99,738.60

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Solution

The fourth proportional to 324,359.28, 486,585.48 and 99,738.60 is: 149,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,359.28 : 486,585.48 = 99,738.60 : x
  2. Step 2: Convert to fraction form
    324,359.28/486,585.48 = 99,738.60/x
  3. Step 3: Cross multiply
    324,359.28x = 486,585.48 × 99,738.60
  4. Step 4: Simplify right side
    324,359.28x = 48,531,354,555.53
  5. Step 5: Solve for x
    x = 48,531,354,555.53/324,359.28
  6. Step 6: Final answer
    x = 149,622.22

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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.