Home / 285,389.72-394,102.55-213,645.18

Finding the Fourth Proportional to 285,389.72, 394,102.55 and 213,645.18

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Solution

The fourth proportional to 285,389.72, 394,102.55 and 213,645.18 is: 295,028.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,389.72 : 394,102.55 = 213,645.18 : x
  2. Step 2: Convert to fraction form
    285,389.72/394,102.55 = 213,645.18/x
  3. Step 3: Cross multiply
    285,389.72x = 394,102.55 × 213,645.18
  4. Step 4: Simplify right side
    285,389.72x = 84,198,109,164.98
  5. Step 5: Solve for x
    x = 84,198,109,164.98/285,389.72
  6. Step 6: Final answer
    x = 295,028.53

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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.