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Finding the Fourth Proportional to 299,728.07, 449,581.70 and 75,090.43

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Solution

The fourth proportional to 299,728.07, 449,581.70 and 75,090.43 is: 112,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,728.07 : 449,581.70 = 75,090.43 : x
  2. Step 2: Convert to fraction form
    299,728.07/449,581.70 = 75,090.43/x
  3. Step 3: Cross multiply
    299,728.07x = 449,581.70 × 75,090.43
  4. Step 4: Simplify right side
    299,728.07x = 33,759,283,173.13
  5. Step 5: Solve for x
    x = 33,759,283,173.13/299,728.07
  6. Step 6: Final answer
    x = 112,633.04

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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.