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Finding the Fourth Proportional to 320,499.06, 480,571.10 and 131,092.43

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Solution

The fourth proportional to 320,499.06, 480,571.10 and 131,092.43 is: 196,566.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,499.06 : 480,571.10 = 131,092.43 : x
  2. Step 2: Convert to fraction form
    320,499.06/480,571.10 = 131,092.43/x
  3. Step 3: Cross multiply
    320,499.06x = 480,571.10 × 131,092.43
  4. Step 4: Simplify right side
    320,499.06x = 62,999,230,720.05
  5. Step 5: Solve for x
    x = 62,999,230,720.05/320,499.06
  6. Step 6: Final answer
    x = 196,566.04

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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.