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Finding the Fourth Proportional to 299,672.15, 449,512.13 and 99,992.54

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Solution

The fourth proportional to 299,672.15, 449,512.13 and 99,992.54 is: 149,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,672.15 : 449,512.13 = 99,992.54 : x
  2. Step 2: Convert to fraction form
    299,672.15/449,512.13 = 99,992.54/x
  3. Step 3: Cross multiply
    299,672.15x = 449,512.13 × 99,992.54
  4. Step 4: Simplify right side
    299,672.15x = 44,947,859,639.51
  5. Step 5: Solve for x
    x = 44,947,859,639.51/299,672.15
  6. Step 6: Final answer
    x = 149,990.11

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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.