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Finding the Fourth Proportional to 299,660.40, 449,317.80 and 112,690.80

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Solution

The fourth proportional to 299,660.40, 449,317.80 and 112,690.80 is: 168,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,660.40 : 449,317.80 = 112,690.80 : x
  2. Step 2: Convert to fraction form
    299,660.40/449,317.80 = 112,690.80/x
  3. Step 3: Cross multiply
    299,660.40x = 449,317.80 × 112,690.80
  4. Step 4: Simplify right side
    299,660.40x = 50,633,982,336.24
  5. Step 5: Solve for x
    x = 50,633,982,336.24/299,660.40
  6. Step 6: Final answer
    x = 168,971.22

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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.