Finding the Fourth Proportional to 389,413.48, 537,415.68 and 219,643.96
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Solution
The fourth proportional to 389,413.48, 537,415.68 and 219,643.96 is: 303,122.81
Step by Step Solution
- Step 1: Write the proportion equation
389,413.48 : 537,415.68 = 219,643.96 : x - Step 2: Convert to fraction form
389,413.48/537,415.68 = 219,643.96/x - Step 3: Cross multiply
389,413.48x = 537,415.68 × 219,643.96 - Step 4: Simplify right side
389,413.48x = 118,040,108,121.29 - Step 5: Solve for x
x = 118,040,108,121.29/389,413.48 - Step 6: Final answer
x = 303,122.81
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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.