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Finding the Fourth Proportional to 255,364, 383,046 and 80,260

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Solution

The fourth proportional to 255,364, 383,046 and 80,260 is: 120,390

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,364 : 383,046 = 80,260 : x
  2. Step 2: Convert to fraction form
    255,364/383,046 = 80,260/x
  3. Step 3: Cross multiply
    255,364x = 383,046 × 80,260
  4. Step 4: Simplify right side
    255,364x = 30,743,271,960
  5. Step 5: Solve for x
    x = 30,743,271,960/255,364
  6. Step 6: Final answer
    x = 120,390

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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.