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Finding the Fourth Proportional to 260,928, 391,392 and 63,936

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Solution

The fourth proportional to 260,928, 391,392 and 63,936 is: 95,904

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,928 : 391,392 = 63,936 : x
  2. Step 2: Convert to fraction form
    260,928/391,392 = 63,936/x
  3. Step 3: Cross multiply
    260,928x = 391,392 × 63,936
  4. Step 4: Simplify right side
    260,928x = 25,024,038,912
  5. Step 5: Solve for x
    x = 25,024,038,912/260,928
  6. Step 6: Final answer
    x = 95,904

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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.