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Finding the Fourth Proportional to 445,047.40, 667,563.76 and 108,090.80

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Solution

The fourth proportional to 445,047.40, 667,563.76 and 108,090.80 is: 162,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,047.40 : 667,563.76 = 108,090.80 : x
  2. Step 2: Convert to fraction form
    445,047.40/667,563.76 = 108,090.80/x
  3. Step 3: Cross multiply
    445,047.40x = 667,563.76 × 108,090.80
  4. Step 4: Simplify right side
    445,047.40x = 72,157,500,869.41
  5. Step 5: Solve for x
    x = 72,157,500,869.41/445,047.40
  6. Step 6: Final answer
    x = 162,134.42

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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.