Finding the Fourth Proportional to 312,179.09, 430,810.17 and 168,942.11
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Solution
The fourth proportional to 312,179.09, 430,810.17 and 168,942.11 is: 233,141.75
Step by Step Solution
- Step 1: Write the proportion equation
312,179.09 : 430,810.17 = 168,942.11 : x - Step 2: Convert to fraction form
312,179.09/430,810.17 = 168,942.11/x - Step 3: Cross multiply
312,179.09x = 430,810.17 × 168,942.11 - Step 4: Simplify right side
312,179.09x = 72,781,976,975.21 - Step 5: Solve for x
x = 72,781,976,975.21/312,179.09 - Step 6: Final answer
x = 233,141.75
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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.