Home / 285,395.03-394,109.88-213,650.49

Finding the Fourth Proportional to 285,395.03, 394,109.88 and 213,650.49

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Solution

The fourth proportional to 285,395.03, 394,109.88 and 213,650.49 is: 295,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,395.03 : 394,109.88 = 213,650.49 : x
  2. Step 2: Convert to fraction form
    285,395.03/394,109.88 = 213,650.49/x
  3. Step 3: Cross multiply
    285,395.03x = 394,109.88 × 213,650.49
  4. Step 4: Simplify right side
    285,395.03x = 84,201,768,975.84
  5. Step 5: Solve for x
    x = 84,201,768,975.84/285,395.03
  6. Step 6: Final answer
    x = 295,035.87

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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.