Home / 263,109.08-394,704.86-85,574.49

Finding the Fourth Proportional to 263,109.08, 394,704.86 and 85,574.49

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Solution

The fourth proportional to 263,109.08, 394,704.86 and 85,574.49 is: 128,375.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,109.08 : 394,704.86 = 85,574.49 : x
  2. Step 2: Convert to fraction form
    263,109.08/394,704.86 = 85,574.49/x
  3. Step 3: Cross multiply
    263,109.08x = 394,704.86 × 85,574.49
  4. Step 4: Simplify right side
    263,109.08x = 33,776,666,667.15
  5. Step 5: Solve for x
    x = 33,776,666,667.15/263,109.08
  6. Step 6: Final answer
    x = 128,375.15

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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.