Finding the Fourth Proportional to 311,894.20, 430,413.68 and 168,653.88
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Solution
The fourth proportional to 311,894.20, 430,413.68 and 168,653.88 is: 232,742.18
Step by Step Solution
- Step 1: Write the proportion equation
311,894.20 : 430,413.68 = 168,653.88 : x - Step 2: Convert to fraction form
311,894.20/430,413.68 = 168,653.88/x - Step 3: Cross multiply
311,894.20x = 430,413.68 × 168,653.88 - Step 4: Simplify right side
311,894.20x = 72,590,937,137.08 - Step 5: Solve for x
x = 72,590,937,137.08/311,894.20 - Step 6: Final answer
x = 232,742.18
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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.