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Finding the Fourth Proportional to 299,578.46, 449,417.81 and 99,960.03

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Solution

The fourth proportional to 299,578.46, 449,417.81 and 99,960.03 is: 149,956.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,578.46 : 449,417.81 = 99,960.03 : x
  2. Step 2: Convert to fraction form
    299,578.46/449,417.81 = 99,960.03/x
  3. Step 3: Cross multiply
    299,578.46x = 449,417.81 × 99,960.03
  4. Step 4: Simplify right side
    299,578.46x = 44,923,818,393.88
  5. Step 5: Solve for x
    x = 44,923,818,393.88/299,578.46
  6. Step 6: Final answer
    x = 149,956.77

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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.