Finding the Fourth Proportional to 206,642.71, 309,256.29 and 143,533.99
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Solution
The fourth proportional to 206,642.71, 309,256.29 and 143,533.99 is: 214,809.36
Step by Step Solution
- Step 1: Write the proportion equation
206,642.71 : 309,256.29 = 143,533.99 : x - Step 2: Convert to fraction form
206,642.71/309,256.29 = 143,533.99/x - Step 3: Cross multiply
206,642.71x = 309,256.29 × 143,533.99 - Step 4: Simplify right side
206,642.71x = 44,388,789,236.30 - Step 5: Solve for x
x = 44,388,789,236.30/206,642.71 - Step 6: Final answer
x = 214,809.36
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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.