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Finding the Fourth Proportional to 259,593.80, 389,361.90 and 72,624.20

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Solution

The fourth proportional to 259,593.80, 389,361.90 and 72,624.20 is: 108,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,593.80 : 389,361.90 = 72,624.20 : x
  2. Step 2: Convert to fraction form
    259,593.80/389,361.90 = 72,624.20/x
  3. Step 3: Cross multiply
    259,593.80x = 389,361.90 × 72,624.20
  4. Step 4: Simplify right side
    259,593.80x = 28,277,096,497.98
  5. Step 5: Solve for x
    x = 28,277,096,497.98/259,593.80
  6. Step 6: Final answer
    x = 108,928.24

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1.5x scale

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.