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Finding the Fourth Proportional to 324,361.80, 486,541.55 and 87,704.46

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Solution

The fourth proportional to 324,361.80, 486,541.55 and 87,704.46 is: 131,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,361.80 : 486,541.55 = 87,704.46 : x
  2. Step 2: Convert to fraction form
    324,361.80/486,541.55 = 87,704.46/x
  3. Step 3: Cross multiply
    324,361.80x = 486,541.55 × 87,704.46
  4. Step 4: Simplify right side
    324,361.80x = 42,671,864,129.57
  5. Step 5: Solve for x
    x = 42,671,864,129.57/324,361.80
  6. Step 6: Final answer
    x = 131,556.38

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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.