Finding the Fourth Proportional to 312,990.05, 469,489.94 and 76,337.21
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Solution
The fourth proportional to 312,990.05, 469,489.94 and 76,337.21 is: 114,506.99
Step by Step Solution
- Step 1: Write the proportion equation
312,990.05 : 469,489.94 = 76,337.21 : x - Step 2: Convert to fraction form
312,990.05/469,489.94 = 76,337.21/x - Step 3: Cross multiply
312,990.05x = 469,489.94 × 76,337.21 - Step 4: Simplify right side
312,990.05x = 35,839,549,413.53 - Step 5: Solve for x
x = 35,839,549,413.53/312,990.05 - Step 6: Final answer
x = 114,506.99
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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.