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Finding the Fourth Proportional to 300,087.04, 449,630.78 and 211,153.70

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Solution

The fourth proportional to 300,087.04, 449,630.78 and 211,153.70 is: 316,378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,087.04 : 449,630.78 = 211,153.70 : x
  2. Step 2: Convert to fraction form
    300,087.04/449,630.78 = 211,153.70/x
  3. Step 3: Cross multiply
    300,087.04x = 449,630.78 × 211,153.70
  4. Step 4: Simplify right side
    300,087.04x = 94,941,202,830.89
  5. Step 5: Solve for x
    x = 94,941,202,830.89/300,087.04
  6. Step 6: Final answer
    x = 316,378.88

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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.