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Finding the Fourth Proportional to 255,370, 383,055 and 80,266

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Solution

The fourth proportional to 255,370, 383,055 and 80,266 is: 120,399

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,370 : 383,055 = 80,266 : x
  2. Step 2: Convert to fraction form
    255,370/383,055 = 80,266/x
  3. Step 3: Cross multiply
    255,370x = 383,055 × 80,266
  4. Step 4: Simplify right side
    255,370x = 30,746,292,630
  5. Step 5: Solve for x
    x = 30,746,292,630/255,370
  6. Step 6: Final answer
    x = 120,399

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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.