Home / 285,205.12-393,297.60-189,715.84

Finding the Fourth Proportional to 285,205.12, 393,297.60 and 189,715.84

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Solution

The fourth proportional to 285,205.12, 393,297.60 and 189,715.84 is: 261,617.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,205.12 : 393,297.60 = 189,715.84 : x
  2. Step 2: Convert to fraction form
    285,205.12/393,297.60 = 189,715.84/x
  3. Step 3: Cross multiply
    285,205.12x = 393,297.60 × 189,715.84
  4. Step 4: Simplify right side
    285,205.12x = 74,614,784,553.98
  5. Step 5: Solve for x
    x = 74,614,784,553.98/285,205.12
  6. Step 6: Final answer
    x = 261,617.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.