Finding the Fourth Proportional to 268,982.70, 403,430.85 and 81,950.70
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Solution
The fourth proportional to 268,982.70, 403,430.85 and 81,950.70 is: 122,912.89
Step by Step Solution
- Step 1: Write the proportion equation
268,982.70 : 403,430.85 = 81,950.70 : x - Step 2: Convert to fraction form
268,982.70/403,430.85 = 81,950.70/x - Step 3: Cross multiply
268,982.70x = 403,430.85 × 81,950.70 - Step 4: Simplify right side
268,982.70x = 33,061,440,559.10 - Step 5: Solve for x
x = 33,061,440,559.10/268,982.70 - Step 6: Final answer
x = 122,912.89
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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.