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Finding the Fourth Proportional to 446,523.80, 669,785.70 and 131,012.60

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Solution

The fourth proportional to 446,523.80, 669,785.70 and 131,012.60 is: 196,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,523.80 : 669,785.70 = 131,012.60 : x
  2. Step 2: Convert to fraction form
    446,523.80/669,785.70 = 131,012.60/x
  3. Step 3: Cross multiply
    446,523.80x = 669,785.70 × 131,012.60
  4. Step 4: Simplify right side
    446,523.80x = 87,750,365,999.82
  5. Step 5: Solve for x
    x = 87,750,365,999.82/446,523.80
  6. Step 6: Final answer
    x = 196,518.90

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Double scale
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Similar ratio
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1.5x scale

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.