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Finding the Fourth Proportional to 255,960.74, 383,897.36 and 68,928.50

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Solution

The fourth proportional to 255,960.74, 383,897.36 and 68,928.50 is: 103,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,960.74 : 383,897.36 = 68,928.50 : x
  2. Step 2: Convert to fraction form
    255,960.74/383,897.36 = 68,928.50/x
  3. Step 3: Cross multiply
    255,960.74x = 383,897.36 × 68,928.50
  4. Step 4: Simplify right side
    255,960.74x = 26,461,469,178.76
  5. Step 5: Solve for x
    x = 26,461,469,178.76/255,960.74
  6. Step 6: Final answer
    x = 103,380.97

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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.