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Finding the Fourth Proportional to 279,969.40, 419,954.10 and 236,229.40

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Solution

The fourth proportional to 279,969.40, 419,954.10 and 236,229.40 is: 354,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,969.40 : 419,954.10 = 236,229.40 : x
  2. Step 2: Convert to fraction form
    279,969.40/419,954.10 = 236,229.40/x
  3. Step 3: Cross multiply
    279,969.40x = 419,954.10 × 236,229.40
  4. Step 4: Simplify right side
    279,969.40x = 99,205,505,070.54
  5. Step 5: Solve for x
    x = 99,205,505,070.54/279,969.40
  6. Step 6: Final answer
    x = 354,344.10

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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.