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Finding the Fourth Proportional to 299,988.46, 449,982.72 and 120,155.56

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Solution

The fourth proportional to 299,988.46, 449,982.72 and 120,155.56 is: 180,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,988.46 : 449,982.72 = 120,155.56 : x
  2. Step 2: Convert to fraction form
    299,988.46/449,982.72 = 120,155.56/x
  3. Step 3: Cross multiply
    299,988.46x = 449,982.72 × 120,155.56
  4. Step 4: Simplify right side
    299,988.46x = 54,067,925,711.92
  5. Step 5: Solve for x
    x = 54,067,925,711.92/299,988.46
  6. Step 6: Final answer
    x = 180,233.35

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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.