Finding the Fourth Proportional to 276,717.40, 415,205.70 and 143,747.80
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Solution
The fourth proportional to 276,717.40, 415,205.70 and 143,747.80 is: 215,689.02
Step by Step Solution
- Step 1: Write the proportion equation
276,717.40 : 415,205.70 = 143,747.80 : x - Step 2: Convert to fraction form
276,717.40/415,205.70 = 143,747.80/x - Step 3: Cross multiply
276,717.40x = 415,205.70 × 143,747.80 - Step 4: Simplify right side
276,717.40x = 59,684,905,922.46 - Step 5: Solve for x
x = 59,684,905,922.46/276,717.40 - Step 6: Final answer
x = 215,689.02
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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.