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Finding the Fourth Proportional to 299,671.15, 449,510.63 and 99,991.54

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Solution

The fourth proportional to 299,671.15, 449,510.63 and 99,991.54 is: 149,988.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,671.15 : 449,510.63 = 99,991.54 : x
  2. Step 2: Convert to fraction form
    299,671.15/449,510.63 = 99,991.54/x
  3. Step 3: Cross multiply
    299,671.15x = 449,510.63 × 99,991.54
  4. Step 4: Simplify right side
    299,671.15x = 44,947,259,359.17
  5. Step 5: Solve for x
    x = 44,947,259,359.17/299,671.15
  6. Step 6: Final answer
    x = 149,988.61

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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.