Finding the Fourth Proportional to 263,518,436.38, 395,197,979.92 and 79,236,993.19
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Solution
The fourth proportional to 263,518,436.38, 395,197,979.92 and 79,236,993.19 is: 118,831,532.52
Step by Step Solution
- Step 1: Write the proportion equation
263,518,436.38 : 395,197,979.92 = 79,236,993.19 : x - Step 2: Convert to fraction form
263,518,436.38/395,197,979.92 = 79,236,993.19/x - Step 3: Cross multiply
263,518,436.38x = 395,197,979.92 × 79,236,993.19 - Step 4: Simplify right side
263,518,436.38x = 31,314,299,643,622,796 - Step 5: Solve for x
x = 31,314,299,643,622,796/263,518,436.38 - Step 6: Final answer
x = 118,831,532.52
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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.