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Finding the Fourth Proportional to 262,738.76, 394,107.95 and 85,245.77

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Solution

The fourth proportional to 262,738.76, 394,107.95 and 85,245.77 is: 127,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,738.76 : 394,107.95 = 85,245.77 : x
  2. Step 2: Convert to fraction form
    262,738.76/394,107.95 = 85,245.77/x
  3. Step 3: Cross multiply
    262,738.76x = 394,107.95 × 85,245.77
  4. Step 4: Simplify right side
    262,738.76x = 33,596,036,859.26
  5. Step 5: Solve for x
    x = 33,596,036,859.26/262,738.76
  6. Step 6: Final answer
    x = 127,868.60

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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.