Finding the Fourth Proportional to 421,629.96, 632,489.28 and 137,342.70
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Solution
The fourth proportional to 421,629.96, 632,489.28 and 137,342.70 is: 206,028.49
Step by Step Solution
- Step 1: Write the proportion equation
421,629.96 : 632,489.28 = 137,342.70 : x - Step 2: Convert to fraction form
421,629.96/632,489.28 = 137,342.70/x - Step 3: Cross multiply
421,629.96x = 632,489.28 × 137,342.70 - Step 4: Simplify right side
421,629.96x = 86,867,785,436.26 - Step 5: Solve for x
x = 86,867,785,436.26/421,629.96 - Step 6: Final answer
x = 206,028.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.