Finding the Fourth Proportional to 221,891.75, 306,210.62 and 121,289.75
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Solution
The fourth proportional to 221,891.75, 306,210.62 and 121,289.75 is: 167,379.86
Step by Step Solution
- Step 1: Write the proportion equation
221,891.75 : 306,210.62 = 121,289.75 : x - Step 2: Convert to fraction form
221,891.75/306,210.62 = 121,289.75/x - Step 3: Cross multiply
221,891.75x = 306,210.62 × 121,289.75 - Step 4: Simplify right side
221,891.75x = 37,140,209,547.15 - Step 5: Solve for x
x = 37,140,209,547.15/221,891.75 - Step 6: Final answer
x = 167,379.86
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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.