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Finding the Fourth Proportional to 299,860.58, 449,864.69 and 211,287.06

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Solution

The fourth proportional to 299,860.58, 449,864.69 and 211,287.06 is: 316,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,860.58 : 449,864.69 = 211,287.06 : x
  2. Step 2: Convert to fraction form
    299,860.58/449,864.69 = 211,287.06/x
  3. Step 3: Cross multiply
    299,860.58x = 449,864.69 × 211,287.06
  4. Step 4: Simplify right side
    299,860.58x = 95,050,587,747.91
  5. Step 5: Solve for x
    x = 95,050,587,747.91/299,860.58
  6. Step 6: Final answer
    x = 316,982.60

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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.