Finding the Fourth Proportional to 221,691.68, 305,943.02 and 124,934.05
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Solution
The fourth proportional to 221,691.68, 305,943.02 and 124,934.05 is: 172,413.77
Step by Step Solution
- Step 1: Write the proportion equation
221,691.68 : 305,943.02 = 124,934.05 : x - Step 2: Convert to fraction form
221,691.68/305,943.02 = 124,934.05/x - Step 3: Cross multiply
221,691.68x = 305,943.02 × 124,934.05 - Step 4: Simplify right side
221,691.68x = 38,222,699,765.92 - Step 5: Solve for x
x = 38,222,699,765.92/221,691.68 - Step 6: Final answer
x = 172,413.77
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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.