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Finding the Fourth Proportional to 299,980.26, 449,994.29 and 100,301.90

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Solution

The fourth proportional to 299,980.26, 449,994.29 and 100,301.90 is: 150,460.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,980.26 : 449,994.29 = 100,301.90 : x
  2. Step 2: Convert to fraction form
    299,980.26/449,994.29 = 100,301.90/x
  3. Step 3: Cross multiply
    299,980.26x = 449,994.29 × 100,301.90
  4. Step 4: Simplify right side
    299,980.26x = 45,135,279,524.67
  5. Step 5: Solve for x
    x = 45,135,279,524.67/299,980.26
  6. Step 6: Final answer
    x = 150,460.83

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1.5x scale

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.