Finding the Fourth Proportional to 408,858.62, 613,413.54 and 209,319.08
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Solution
The fourth proportional to 408,858.62, 613,413.54 and 209,319.08 is: 314,042.92
Step by Step Solution
- Step 1: Write the proportion equation
408,858.62 : 613,413.54 = 209,319.08 : x - Step 2: Convert to fraction form
408,858.62/613,413.54 = 209,319.08/x - Step 3: Cross multiply
408,858.62x = 613,413.54 × 209,319.08 - Step 4: Simplify right side
408,858.62x = 128,399,154,785.28 - Step 5: Solve for x
x = 128,399,154,785.28/408,858.62 - Step 6: Final answer
x = 314,042.92
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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.