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Finding the Fourth Proportional to 439,940.50, 659,910.75 and 159,458.02

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Solution

The fourth proportional to 439,940.50, 659,910.75 and 159,458.02 is: 239,187.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,940.50 : 659,910.75 = 159,458.02 : x
  2. Step 2: Convert to fraction form
    439,940.50/659,910.75 = 159,458.02/x
  3. Step 3: Cross multiply
    439,940.50x = 659,910.75 × 159,458.02
  4. Step 4: Simplify right side
    439,940.50x = 105,228,061,571.72
  5. Step 5: Solve for x
    x = 105,228,061,571.72/439,940.50
  6. Step 6: Final answer
    x = 239,187.03

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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.