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Finding the Fourth Proportional to 299,740.20, 449,783.10 and 112,885.80

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Solution

The fourth proportional to 299,740.20, 449,783.10 and 112,885.80 is: 169,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,740.20 : 449,783.10 = 112,885.80 : x
  2. Step 2: Convert to fraction form
    299,740.20/449,783.10 = 112,885.80/x
  3. Step 3: Cross multiply
    299,740.20x = 449,783.10 × 112,885.80
  4. Step 4: Simplify right side
    299,740.20x = 50,774,125,069.98
  5. Step 5: Solve for x
    x = 50,774,125,069.98/299,740.20
  6. Step 6: Final answer
    x = 169,393.78

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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.