Finding the Fourth Proportional to 312,122.49, 430,725.97 and 168,879.39
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Solution
The fourth proportional to 312,122.49, 430,725.97 and 168,879.39 is: 233,051.90
Step by Step Solution
- Step 1: Write the proportion equation
312,122.49 : 430,725.97 = 168,879.39 : x - Step 2: Convert to fraction form
312,122.49/430,725.97 = 168,879.39/x - Step 3: Cross multiply
312,122.49x = 430,725.97 × 168,879.39 - Step 4: Simplify right side
312,122.49x = 72,740,739,070.76 - Step 5: Solve for x
x = 72,740,739,070.76/312,122.49 - Step 6: Final answer
x = 233,051.90
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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.