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Finding the Fourth Proportional to 324,340.43, 486,557.08 and 99,719.73

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Solution

The fourth proportional to 324,340.43, 486,557.08 and 99,719.73 is: 149,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,340.43 : 486,557.08 = 99,719.73 : x
  2. Step 2: Convert to fraction form
    324,340.43/486,557.08 = 99,719.73/x
  3. Step 3: Cross multiply
    324,340.43x = 486,557.08 × 99,719.73
  4. Step 4: Simplify right side
    324,340.43x = 48,519,340,647.19
  5. Step 5: Solve for x
    x = 48,519,340,647.19/324,340.43
  6. Step 6: Final answer
    x = 149,593.87

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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.