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Finding the Fourth Proportional to 324,551.68, 486,873.60 and 99,930.78

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Solution

The fourth proportional to 324,551.68, 486,873.60 and 99,930.78 is: 149,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,551.68 : 486,873.60 = 99,930.78 : x
  2. Step 2: Convert to fraction form
    324,551.68/486,873.60 = 99,930.78/x
  3. Step 3: Cross multiply
    324,551.68x = 486,873.60 × 99,930.78
  4. Step 4: Simplify right side
    324,551.68x = 48,653,658,609.41
  5. Step 5: Solve for x
    x = 48,653,658,609.41/324,551.68
  6. Step 6: Final answer
    x = 149,910.36

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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.