Finding the Fourth Proportional to 289,043.64, 433,457.73 and 99,450.99
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Solution
The fourth proportional to 289,043.64, 433,457.73 and 99,450.99 is: 149,139.42
Step by Step Solution
- Step 1: Write the proportion equation
289,043.64 : 433,457.73 = 99,450.99 : x - Step 2: Convert to fraction form
289,043.64/433,457.73 = 99,450.99/x - Step 3: Cross multiply
289,043.64x = 433,457.73 × 99,450.99 - Step 4: Simplify right side
289,043.64x = 43,107,800,371.65 - Step 5: Solve for x
x = 43,107,800,371.65/289,043.64 - Step 6: Final answer
x = 149,139.42
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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.