Finding the Fourth Proportional to 221,800.68, 306,139.91 and 126,364.05
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Solution
The fourth proportional to 221,800.68, 306,139.91 and 126,364.05 is: 174,413.70
Step by Step Solution
- Step 1: Write the proportion equation
221,800.68 : 306,139.91 = 126,364.05 : x - Step 2: Convert to fraction form
221,800.68/306,139.91 = 126,364.05/x - Step 3: Cross multiply
221,800.68x = 306,139.91 × 126,364.05 - Step 4: Simplify right side
221,800.68x = 38,685,078,262.42 - Step 5: Solve for x
x = 38,685,078,262.42/221,800.68 - Step 6: Final answer
x = 174,413.70
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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.