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Finding the Fourth Proportional to 299,474.70, 449,048.03 and 121,780.95

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Solution

The fourth proportional to 299,474.70, 449,048.03 and 121,780.95 is: 182,604.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,474.70 : 449,048.03 = 121,780.95 : x
  2. Step 2: Convert to fraction form
    299,474.70/449,048.03 = 121,780.95/x
  3. Step 3: Cross multiply
    299,474.70x = 449,048.03 × 121,780.95
  4. Step 4: Simplify right side
    299,474.70x = 54,685,495,080.12
  5. Step 5: Solve for x
    x = 54,685,495,080.12/299,474.70
  6. Step 6: Final answer
    x = 182,604.72

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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.