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Finding the Fourth Proportional to 481,312, 721,968 and 131,104

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Solution

The fourth proportional to 481,312, 721,968 and 131,104 is: 196,656

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,312 : 721,968 = 131,104 : x
  2. Step 2: Convert to fraction form
    481,312/721,968 = 131,104/x
  3. Step 3: Cross multiply
    481,312x = 721,968 × 131,104
  4. Step 4: Simplify right side
    481,312x = 94,652,892,672
  5. Step 5: Solve for x
    x = 94,652,892,672/481,312
  6. Step 6: Final answer
    x = 196,656

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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.