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Finding the Fourth Proportional to 299,989.80, 449,466.30 and 253,333.80

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Solution

The fourth proportional to 299,989.80, 449,466.30 and 253,333.80 is: 379,562.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,989.80 : 449,466.30 = 253,333.80 : x
  2. Step 2: Convert to fraction form
    299,989.80/449,466.30 = 253,333.80/x
  3. Step 3: Cross multiply
    299,989.80x = 449,466.30 × 253,333.80
  4. Step 4: Simplify right side
    299,989.80x = 113,865,005,750.94
  5. Step 5: Solve for x
    x = 113,865,005,750.94/299,989.80
  6. Step 6: Final answer
    x = 379,562.92

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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.