Finding the Fourth Proportional to 216,972.85, 299,419.19 and 121,482.97
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Solution
The fourth proportional to 216,972.85, 299,419.19 and 121,482.97 is: 167,644.63
Step by Step Solution
- Step 1: Write the proportion equation
216,972.85 : 299,419.19 = 121,482.97 : x - Step 2: Convert to fraction form
216,972.85/299,419.19 = 121,482.97/x - Step 3: Cross multiply
216,972.85x = 299,419.19 × 121,482.97 - Step 4: Simplify right side
216,972.85x = 36,374,332,476.19 - Step 5: Solve for x
x = 36,374,332,476.19/216,972.85 - Step 6: Final answer
x = 167,644.63
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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.