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Finding the Fourth Proportional to 324,438.60, 486,704.48 and 99,817.91

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Solution

The fourth proportional to 324,438.60, 486,704.48 and 99,817.91 is: 149,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,438.60 : 486,704.48 = 99,817.91 : x
  2. Step 2: Convert to fraction form
    324,438.60/486,704.48 = 99,817.91/x
  3. Step 3: Cross multiply
    324,438.60x = 486,704.48 × 99,817.91
  4. Step 4: Simplify right side
    324,438.60x = 48,581,821,048.62
  5. Step 5: Solve for x
    x = 48,581,821,048.62/324,438.60
  6. Step 6: Final answer
    x = 149,741.19

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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.