Finding the Fourth Proportional to 288,015,687.24, 397,462,694.88 and 155,856,669.84
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Solution
The fourth proportional to 288,015,687.24, 397,462,694.88 and 155,856,669.84 is: 215,082,770.68
Step by Step Solution
- Step 1: Write the proportion equation
288,015,687.24 : 397,462,694.88 = 155,856,669.84 : x - Step 2: Convert to fraction form
288,015,687.24/397,462,694.88 = 155,856,669.84/x - Step 3: Cross multiply
288,015,687.24x = 397,462,694.88 × 155,856,669.84 - Step 4: Simplify right side
288,015,687.24x = 61,947,212,009,628,816 - Step 5: Solve for x
x = 61,947,212,009,628,816/288,015,687.24 - Step 6: Final answer
x = 215,082,770.68
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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.