Finding the Fourth Proportional to 206,643.71, 309,257.79 and 143,534.99
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Solution
The fourth proportional to 206,643.71, 309,257.79 and 143,534.99 is: 214,810.86
Step by Step Solution
- Step 1: Write the proportion equation
206,643.71 : 309,257.79 = 143,534.99 : x - Step 2: Convert to fraction form
206,643.71/309,257.79 = 143,534.99/x - Step 3: Cross multiply
206,643.71x = 309,257.79 × 143,534.99 - Step 4: Simplify right side
206,643.71x = 44,389,313,795.07 - Step 5: Solve for x
x = 44,389,313,795.07/206,643.71 - Step 6: Final answer
x = 214,810.86
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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.