Home / 324,431.13-486,647.85-99,790.05

Finding the Fourth Proportional to 324,431.13, 486,647.85 and 99,790.05

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Solution

The fourth proportional to 324,431.13, 486,647.85 and 99,790.05 is: 149,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,431.13 : 486,647.85 = 99,790.05 : x
  2. Step 2: Convert to fraction form
    324,431.13/486,647.85 = 99,790.05/x
  3. Step 3: Cross multiply
    324,431.13x = 486,647.85 × 99,790.05
  4. Step 4: Simplify right side
    324,431.13x = 48,562,613,283.89
  5. Step 5: Solve for x
    x = 48,562,613,283.89/324,431.13
  6. Step 6: Final answer
    x = 149,685.43

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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.