Finding the Fourth Proportional to 212,578.20, 293,378.64 and 158,769.84
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Solution
The fourth proportional to 212,578.20, 293,378.64 and 158,769.84 is: 219,117.86
Step by Step Solution
- Step 1: Write the proportion equation
212,578.20 : 293,378.64 = 158,769.84 : x - Step 2: Convert to fraction form
212,578.20/293,378.64 = 158,769.84/x - Step 3: Cross multiply
212,578.20x = 293,378.64 × 158,769.84 - Step 4: Simplify right side
212,578.20x = 46,579,679,732.22 - Step 5: Solve for x
x = 46,579,679,732.22/212,578.20 - Step 6: Final answer
x = 219,117.86
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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.