Finding the Fourth Proportional to 235,814.63, 325,413.99 and 128,385.05
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Solution
The fourth proportional to 235,814.63, 325,413.99 and 128,385.05 is: 177,165.81
Step by Step Solution
- Step 1: Write the proportion equation
235,814.63 : 325,413.99 = 128,385.05 : x - Step 2: Convert to fraction form
235,814.63/325,413.99 = 128,385.05/x - Step 3: Cross multiply
235,814.63x = 325,413.99 × 128,385.05 - Step 4: Simplify right side
235,814.63x = 41,778,289,749.78 - Step 5: Solve for x
x = 41,778,289,749.78/235,814.63 - Step 6: Final answer
x = 177,165.81
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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.