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Finding the Fourth Proportional to 255,786.42, 383,679.09 and 68,798.10

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Solution

The fourth proportional to 255,786.42, 383,679.09 and 68,798.10 is: 103,197.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,786.42 : 383,679.09 = 68,798.10 : x
  2. Step 2: Convert to fraction form
    255,786.42/383,679.09 = 68,798.10/x
  3. Step 3: Cross multiply
    255,786.42x = 383,679.09 × 68,798.10
  4. Step 4: Simplify right side
    255,786.42x = 26,396,392,401.73
  5. Step 5: Solve for x
    x = 26,396,392,401.73/255,786.42
  6. Step 6: Final answer
    x = 103,197.00

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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.