Finding the Fourth Proportional to 621,138.92, 931,905.18 and 221,770.82
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Solution
The fourth proportional to 621,138.92, 931,905.18 and 221,770.82 is: 332,726.50
Step by Step Solution
- Step 1: Write the proportion equation
621,138.92 : 931,905.18 = 221,770.82 : x - Step 2: Convert to fraction form
621,138.92/931,905.18 = 221,770.82/x - Step 3: Cross multiply
621,138.92x = 931,905.18 × 221,770.82 - Step 4: Simplify right side
621,138.92x = 206,669,375,930.85 - Step 5: Solve for x
x = 206,669,375,930.85/621,138.92 - Step 6: Final answer
x = 332,726.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.