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Finding the Fourth Proportional to 215,610.44, 323,450.22 and 90,969.80

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Solution

The fourth proportional to 215,610.44, 323,450.22 and 90,969.80 is: 136,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,610.44 : 323,450.22 = 90,969.80 : x
  2. Step 2: Convert to fraction form
    215,610.44/323,450.22 = 90,969.80/x
  3. Step 3: Cross multiply
    215,610.44x = 323,450.22 × 90,969.80
  4. Step 4: Simplify right side
    215,610.44x = 29,424,201,823.36
  5. Step 5: Solve for x
    x = 29,424,201,823.36/215,610.44
  6. Step 6: Final answer
    x = 136,469.28

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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.