Home / 285,406.11-394,125.18-213,661.56

Finding the Fourth Proportional to 285,406.11, 394,125.18 and 213,661.56

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Solution

The fourth proportional to 285,406.11, 394,125.18 and 213,661.56 is: 295,051.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,406.11 : 394,125.18 = 213,661.56 : x
  2. Step 2: Convert to fraction form
    285,406.11/394,125.18 = 213,661.56/x
  3. Step 3: Cross multiply
    285,406.11x = 394,125.18 × 213,661.56
  4. Step 4: Simplify right side
    285,406.11x = 84,209,400,794.08
  5. Step 5: Solve for x
    x = 84,209,400,794.08/285,406.11
  6. Step 6: Final answer
    x = 295,051.15

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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.