Finding the Fourth Proportional to 216,608.64, 324,879.36 and 83,551.20
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Solution
The fourth proportional to 216,608.64, 324,879.36 and 83,551.20 is: 125,313.84
Step by Step Solution
- Step 1: Write the proportion equation
216,608.64 : 324,879.36 = 83,551.20 : x - Step 2: Convert to fraction form
216,608.64/324,879.36 = 83,551.20/x - Step 3: Cross multiply
216,608.64x = 324,879.36 × 83,551.20 - Step 4: Simplify right side
216,608.64x = 27,144,060,383.23 - Step 5: Solve for x
x = 27,144,060,383.23/216,608.64 - Step 6: Final answer
x = 125,313.84
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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.