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Finding the Fourth Proportional to 446,603.60, 669,991.80 and 131,070.80

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Solution

The fourth proportional to 446,603.60, 669,991.80 and 131,070.80 is: 196,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,603.60 : 669,991.80 = 131,070.80 : x
  2. Step 2: Convert to fraction form
    446,603.60/669,991.80 = 131,070.80/x
  3. Step 3: Cross multiply
    446,603.60x = 669,991.80 × 131,070.80
  4. Step 4: Simplify right side
    446,603.60x = 87,816,361,219.44
  5. Step 5: Solve for x
    x = 87,816,361,219.44/446,603.60
  6. Step 6: Final answer
    x = 196,631.56

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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.