Finding the Fourth Proportional to 255,115.18, 351,979.68 and 144,715.63
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Solution
The fourth proportional to 255,115.18, 351,979.68 and 144,715.63 is: 199,662.60
Step by Step Solution
- Step 1: Write the proportion equation
255,115.18 : 351,979.68 = 144,715.63 : x - Step 2: Convert to fraction form
255,115.18/351,979.68 = 144,715.63/x - Step 3: Cross multiply
255,115.18x = 351,979.68 × 144,715.63 - Step 4: Simplify right side
255,115.18x = 50,936,959,378.50 - Step 5: Solve for x
x = 50,936,959,378.50/255,115.18 - Step 6: Final answer
x = 199,662.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.