Finding the Fourth Proportional to 235,154,967.45, 324,515,116.88 and 129,315,207.70
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Solution
The fourth proportional to 235,154,967.45, 324,515,116.88 and 129,315,207.70 is: 178,455,680.51
Step by Step Solution
- Step 1: Write the proportion equation
235,154,967.45 : 324,515,116.88 = 129,315,207.70 : x - Step 2: Convert to fraction form
235,154,967.45/324,515,116.88 = 129,315,207.70/x - Step 3: Cross multiply
235,154,967.45x = 324,515,116.88 × 129,315,207.70 - Step 4: Simplify right side
235,154,967.45x = 41,964,739,741,126,976 - Step 5: Solve for x
x = 41,964,739,741,126,976/235,154,967.45 - Step 6: Final answer
x = 178,455,680.51
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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.