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Finding the Fourth Proportional to 290,796.46, 436,160.94 and 80,450.80

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Solution

The fourth proportional to 290,796.46, 436,160.94 and 80,450.80 is: 120,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,796.46 : 436,160.94 = 80,450.80 : x
  2. Step 2: Convert to fraction form
    290,796.46/436,160.94 = 80,450.80/x
  3. Step 3: Cross multiply
    290,796.46x = 436,160.94 × 80,450.80
  4. Step 4: Simplify right side
    290,796.46x = 35,089,496,551.75
  5. Step 5: Solve for x
    x = 35,089,496,551.75/290,796.46
  6. Step 6: Final answer
    x = 120,666.86

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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.