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Finding the Fourth Proportional to 324,559.83, 486,854.78 and 99,930.33

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Solution

The fourth proportional to 324,559.83, 486,854.78 and 99,930.33 is: 149,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,559.83 : 486,854.78 = 99,930.33 : x
  2. Step 2: Convert to fraction form
    324,559.83/486,854.78 = 99,930.33/x
  3. Step 3: Cross multiply
    324,559.83x = 486,854.78 × 99,930.33
  4. Step 4: Simplify right side
    324,559.83x = 48,651,558,327.83
  5. Step 5: Solve for x
    x = 48,651,558,327.83/324,559.83
  6. Step 6: Final answer
    x = 149,900.12

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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.