Finding the Fourth Proportional to 216,930.60, 299,361.92 and 121,438.08
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Solution
The fourth proportional to 216,930.60, 299,361.92 and 121,438.08 is: 167,583.26
Step by Step Solution
- Step 1: Write the proportion equation
216,930.60 : 299,361.92 = 121,438.08 : x - Step 2: Convert to fraction form
216,930.60/299,361.92 = 121,438.08/x - Step 3: Cross multiply
216,930.60x = 299,361.92 × 121,438.08 - Step 4: Simplify right side
216,930.60x = 36,353,936,789.91 - Step 5: Solve for x
x = 36,353,936,789.91/216,930.60 - Step 6: Final answer
x = 167,583.26
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.