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Finding the Fourth Proportional to 299,967.40, 449,959.20 and 131,401

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Solution

The fourth proportional to 299,967.40, 449,959.20 and 131,401 is: 197,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,967.40 : 449,959.20 = 131,401 : x
  2. Step 2: Convert to fraction form
    299,967.40/449,959.20 = 131,401/x
  3. Step 3: Cross multiply
    299,967.40x = 449,959.20 × 131,401
  4. Step 4: Simplify right side
    299,967.40x = 59,125,088,839.20
  5. Step 5: Solve for x
    x = 59,125,088,839.20/299,967.40
  6. Step 6: Final answer
    x = 197,105.05

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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.