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Finding the Fourth Proportional to 279,942.70, 419,914.05 and 201,210.70

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Solution

The fourth proportional to 279,942.70, 419,914.05 and 201,210.70 is: 301,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,942.70 : 419,914.05 = 201,210.70 : x
  2. Step 2: Convert to fraction form
    279,942.70/419,914.05 = 201,210.70/x
  3. Step 3: Cross multiply
    279,942.70x = 419,914.05 × 201,210.70
  4. Step 4: Simplify right side
    279,942.70x = 84,491,199,940.34
  5. Step 5: Solve for x
    x = 84,491,199,940.34/279,942.70
  6. Step 6: Final answer
    x = 301,816.05

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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.