Finding the Fourth Proportional to 216,689.92, 324,976.64 and 76,430.08
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Solution
The fourth proportional to 216,689.92, 324,976.64 and 76,430.08 is: 114,624.58
Step by Step Solution
- Step 1: Write the proportion equation
216,689.92 : 324,976.64 = 76,430.08 : x - Step 2: Convert to fraction form
216,689.92/324,976.64 = 76,430.08/x - Step 3: Cross multiply
216,689.92x = 324,976.64 × 76,430.08 - Step 4: Simplify right side
216,689.92x = 24,837,990,593.33 - Step 5: Solve for x
x = 24,837,990,593.33/216,689.92 - Step 6: Final answer
x = 114,624.58
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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.