Finding the Fourth Proportional to 216,431.51, 298,669.75 and 120,938.99
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Solution
The fourth proportional to 216,431.51, 298,669.75 and 120,938.99 is: 166,892.60
Step by Step Solution
- Step 1: Write the proportion equation
216,431.51 : 298,669.75 = 120,938.99 : x - Step 2: Convert to fraction form
216,431.51/298,669.75 = 120,938.99/x - Step 3: Cross multiply
216,431.51x = 298,669.75 × 120,938.99 - Step 4: Simplify right side
216,431.51x = 36,120,816,112.86 - Step 5: Solve for x
x = 36,120,816,112.86/216,431.51 - Step 6: Final answer
x = 166,892.60
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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.