Finding the Fourth Proportional to 216,690.92, 324,978.14 and 76,431.08
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Solution
The fourth proportional to 216,690.92, 324,978.14 and 76,431.08 is: 114,626.08
Step by Step Solution
- Step 1: Write the proportion equation
216,690.92 : 324,978.14 = 76,431.08 : x - Step 2: Convert to fraction form
216,690.92/324,978.14 = 76,431.08/x - Step 3: Cross multiply
216,690.92x = 324,978.14 × 76,431.08 - Step 4: Simplify right side
216,690.92x = 24,838,430,216.59 - Step 5: Solve for x
x = 24,838,430,216.59/216,690.92 - Step 6: Final answer
x = 114,626.08
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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.