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Finding the Fourth Proportional to 299,528.48, 449,142.48 and 99,778.64

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Solution

The fourth proportional to 299,528.48, 449,142.48 and 99,778.64 is: 149,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,528.48 : 449,142.48 = 99,778.64 : x
  2. Step 2: Convert to fraction form
    299,528.48/449,142.48 = 99,778.64/x
  3. Step 3: Cross multiply
    299,528.48x = 449,142.48 × 99,778.64
  4. Step 4: Simplify right side
    299,528.48x = 44,814,825,820.63
  5. Step 5: Solve for x
    x = 44,814,825,820.63/299,528.48
  6. Step 6: Final answer
    x = 149,617.91

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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.