Finding the Fourth Proportional to 221,870,511.63, 306,170,102.70 and 121,396,774.32
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Solution
The fourth proportional to 221,870,511.63, 306,170,102.70 and 121,396,774.32 is: 167,521,418.63
Step by Step Solution
- Step 1: Write the proportion equation
221,870,511.63 : 306,170,102.70 = 121,396,774.32 : x - Step 2: Convert to fraction form
221,870,511.63/306,170,102.70 = 121,396,774.32/x - Step 3: Cross multiply
221,870,511.63x = 306,170,102.70 × 121,396,774.32 - Step 4: Simplify right side
221,870,511.63x = 37,168,062,861,003,120 - Step 5: Solve for x
x = 37,168,062,861,003,120/221,870,511.63 - Step 6: Final answer
x = 167,521,418.63
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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.