Finding the Fourth Proportional to 299,128.80, 412,806.96 and 171,829.92
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Solution
The fourth proportional to 299,128.80, 412,806.96 and 171,829.92 is: 237,130.58
Step by Step Solution
- Step 1: Write the proportion equation
299,128.80 : 412,806.96 = 171,829.92 : x - Step 2: Convert to fraction form
299,128.80/412,806.96 = 171,829.92/x - Step 3: Cross multiply
299,128.80x = 412,806.96 × 171,829.92 - Step 4: Simplify right side
299,128.80x = 70,932,586,912.24 - Step 5: Solve for x
x = 70,932,586,912.24/299,128.80 - Step 6: Final answer
x = 237,130.58
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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.