Home / 263,315.90-394,984.79-85,824.45

Finding the Fourth Proportional to 263,315.90, 394,984.79 and 85,824.45

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Solution

The fourth proportional to 263,315.90, 394,984.79 and 85,824.45 is: 128,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,315.90 : 394,984.79 = 85,824.45 : x
  2. Step 2: Convert to fraction form
    263,315.90/394,984.79 = 85,824.45/x
  3. Step 3: Cross multiply
    263,315.90x = 394,984.79 × 85,824.45
  4. Step 4: Simplify right side
    263,315.90x = 33,899,351,930.99
  5. Step 5: Solve for x
    x = 33,899,351,930.99/263,315.90
  6. Step 6: Final answer
    x = 128,740.24

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1.5x scale

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.