Finding the Fourth Proportional to 218,745.56, 328,151.15 and 78,536.99
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Solution
The fourth proportional to 218,745.56, 328,151.15 and 78,536.99 is: 117,817.27
Step by Step Solution
- Step 1: Write the proportion equation
218,745.56 : 328,151.15 = 78,536.99 : x - Step 2: Convert to fraction form
218,745.56/328,151.15 = 78,536.99/x - Step 3: Cross multiply
218,745.56x = 328,151.15 × 78,536.99 - Step 4: Simplify right side
218,745.56x = 25,772,004,308.25 - Step 5: Solve for x
x = 25,772,004,308.25/218,745.56 - Step 6: Final answer
x = 117,817.27
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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.