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Finding the Fourth Proportional to 446,721.60, 670,168.80 and 131,188.80

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Solution

The fourth proportional to 446,721.60, 670,168.80 and 131,188.80 is: 196,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,721.60 : 670,168.80 = 131,188.80 : x
  2. Step 2: Convert to fraction form
    446,721.60/670,168.80 = 131,188.80/x
  3. Step 3: Cross multiply
    446,721.60x = 670,168.80 × 131,188.80
  4. Step 4: Simplify right side
    446,721.60x = 87,918,640,669.44
  5. Step 5: Solve for x
    x = 87,918,640,669.44/446,721.60
  6. Step 6: Final answer
    x = 196,808.57

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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.