Finding the Fourth Proportional to 310,391.97, 465,583.34 and 85,747.44
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Solution
The fourth proportional to 310,391.97, 465,583.34 and 85,747.44 is: 128,619.89
Step by Step Solution
- Step 1: Write the proportion equation
310,391.97 : 465,583.34 = 85,747.44 : x - Step 2: Convert to fraction form
310,391.97/465,583.34 = 85,747.44/x - Step 3: Cross multiply
310,391.97x = 465,583.34 × 85,747.44 - Step 4: Simplify right side
310,391.97x = 39,922,581,471.96 - Step 5: Solve for x
x = 39,922,581,471.96/310,391.97 - Step 6: Final answer
x = 128,619.89
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1.5x scale
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.