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Finding the Fourth Proportional to 255,983.13, 383,930.94 and 68,950.89

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Solution

The fourth proportional to 255,983.13, 383,930.94 and 68,950.89 is: 103,414.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,983.13 : 383,930.94 = 68,950.89 : x
  2. Step 2: Convert to fraction form
    255,983.13/383,930.94 = 68,950.89/x
  3. Step 3: Cross multiply
    255,983.13x = 383,930.94 × 68,950.89
  4. Step 4: Simplify right side
    255,983.13x = 26,472,380,011.54
  5. Step 5: Solve for x
    x = 26,472,380,011.54/255,983.13
  6. Step 6: Final answer
    x = 103,414.55

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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.