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Finding the Fourth Proportional to 300,114.78, 449,673.75 and 211,181.64

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Solution

The fourth proportional to 300,114.78, 449,673.75 and 211,181.64 is: 316,421.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,114.78 : 449,673.75 = 211,181.64 : x
  2. Step 2: Convert to fraction form
    300,114.78/449,673.75 = 211,181.64/x
  3. Step 3: Cross multiply
    300,114.78x = 449,673.75 × 211,181.64
  4. Step 4: Simplify right side
    300,114.78x = 94,962,839,989.95
  5. Step 5: Solve for x
    x = 94,962,839,989.95/300,114.78
  6. Step 6: Final answer
    x = 316,421.74

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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.