Finding the Fourth Proportional to 278,802.41, 418,413.93 and 129,147.71
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Solution
The fourth proportional to 278,802.41, 418,413.93 and 129,147.71 is: 193,818.99
Step by Step Solution
- Step 1: Write the proportion equation
278,802.41 : 418,413.93 = 129,147.71 : x - Step 2: Convert to fraction form
278,802.41/418,413.93 = 129,147.71/x - Step 3: Cross multiply
278,802.41x = 418,413.93 × 129,147.71 - Step 4: Simplify right side
278,802.41x = 54,037,200,891.60 - Step 5: Solve for x
x = 54,037,200,891.60/278,802.41 - Step 6: Final answer
x = 193,818.99
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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.