Finding the Fourth Proportional to 399,701.15, 551,589.02 and 218,413.08
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Solution
The fourth proportional to 399,701.15, 551,589.02 and 218,413.08 is: 301,410.83
Step by Step Solution
- Step 1: Write the proportion equation
399,701.15 : 551,589.02 = 218,413.08 : x - Step 2: Convert to fraction form
399,701.15/551,589.02 = 218,413.08/x - Step 3: Cross multiply
399,701.15x = 551,589.02 × 218,413.08 - Step 4: Simplify right side
399,701.15x = 120,474,256,479.37 - Step 5: Solve for x
x = 120,474,256,479.37/399,701.15 - Step 6: Final answer
x = 301,410.83
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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.