Finding the Fourth Proportional to 207,643.80, 311,465.70 and 57,894.60
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Solution
The fourth proportional to 207,643.80, 311,465.70 and 57,894.60 is: 86,841.90
Step by Step Solution
- Step 1: Write the proportion equation
207,643.80 : 311,465.70 = 57,894.60 : x - Step 2: Convert to fraction form
207,643.80/311,465.70 = 57,894.60/x - Step 3: Cross multiply
207,643.80x = 311,465.70 × 57,894.60 - Step 4: Simplify right side
207,643.80x = 18,032,182,115.22 - Step 5: Solve for x
x = 18,032,182,115.22/207,643.80 - Step 6: Final answer
x = 86,841.90
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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.