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Finding the Fourth Proportional to 299,871.60, 449,588.70 and 122,287.20

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Solution

The fourth proportional to 299,871.60, 449,588.70 and 122,287.20 is: 183,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,871.60 : 449,588.70 = 122,287.20 : x
  2. Step 2: Convert to fraction form
    299,871.60/449,588.70 = 122,287.20/x
  3. Step 3: Cross multiply
    299,871.60x = 449,588.70 × 122,287.20
  4. Step 4: Simplify right side
    299,871.60x = 54,978,943,274.64
  5. Step 5: Solve for x
    x = 54,978,943,274.64/299,871.60
  6. Step 6: Final answer
    x = 183,341.61

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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.