Finding the Fourth Proportional to 206,641.71, 309,254.79 and 143,532.99
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Solution
The fourth proportional to 206,641.71, 309,254.79 and 143,532.99 is: 214,807.87
Step by Step Solution
- Step 1: Write the proportion equation
206,641.71 : 309,254.79 = 143,532.99 : x - Step 2: Convert to fraction form
206,641.71/309,254.79 = 143,532.99/x - Step 3: Cross multiply
206,641.71x = 309,254.79 × 143,532.99 - Step 4: Simplify right side
206,641.71x = 44,388,264,680.52 - Step 5: Solve for x
x = 44,388,264,680.52/206,641.71 - Step 6: Final answer
x = 214,807.87
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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.