Finding the Fourth Proportional to 215,965,133.80, 323,976,116.70 and 79,746,202.60
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Solution
The fourth proportional to 215,965,133.80, 323,976,116.70 and 79,746,202.60 is: 119,629,796.65
Step by Step Solution
- Step 1: Write the proportion equation
215,965,133.80 : 323,976,116.70 = 79,746,202.60 : x - Step 2: Convert to fraction form
215,965,133.80/323,976,116.70 = 79,746,202.60/x - Step 3: Cross multiply
215,965,133.80x = 323,976,116.70 × 79,746,202.60 - Step 4: Simplify right side
215,965,133.80x = 25,835,865,039,919,440 - Step 5: Solve for x
x = 25,835,865,039,919,440/215,965,133.80 - Step 6: Final answer
x = 119,629,796.65
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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.