Finding the Fourth Proportional to 312,163.30, 430,804.88 and 176,220.28
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Solution
The fourth proportional to 312,163.30, 430,804.88 and 176,220.28 is: 243,195.01
Step by Step Solution
- Step 1: Write the proportion equation
312,163.30 : 430,804.88 = 176,220.28 : x - Step 2: Convert to fraction form
312,163.30/430,804.88 = 176,220.28/x - Step 3: Cross multiply
312,163.30x = 430,804.88 × 176,220.28 - Step 4: Simplify right side
312,163.30x = 75,916,556,578.97 - Step 5: Solve for x
x = 75,916,556,578.97/312,163.30 - Step 6: Final answer
x = 243,195.01
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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.