Finding the Fourth Proportional to 212,921.46, 293,821.02 and 117,425.70
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Solution
The fourth proportional to 212,921.46, 293,821.02 and 117,425.70 is: 162,041.62
Step by Step Solution
- Step 1: Write the proportion equation
212,921.46 : 293,821.02 = 117,425.70 : x - Step 2: Convert to fraction form
212,921.46/293,821.02 = 117,425.70/x - Step 3: Cross multiply
212,921.46x = 293,821.02 × 117,425.70 - Step 4: Simplify right side
212,921.46x = 34,502,138,948.21 - Step 5: Solve for x
x = 34,502,138,948.21/212,921.46 - Step 6: Final answer
x = 162,041.62
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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.