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Finding the Fourth Proportional to 320,096.61, 479,761.38 and 149,087.79

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Solution

The fourth proportional to 320,096.61, 479,761.38 and 149,087.79 is: 223,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,096.61 : 479,761.38 = 149,087.79 : x
  2. Step 2: Convert to fraction form
    320,096.61/479,761.38 = 149,087.79/x
  3. Step 3: Cross multiply
    320,096.61x = 479,761.38 × 149,087.79
  4. Step 4: Simplify right side
    320,096.61x = 71,526,563,871.55
  5. Step 5: Solve for x
    x = 71,526,563,871.55/320,096.61
  6. Step 6: Final answer
    x = 223,453.05

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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.