Finding the Fourth Proportional to 215,813.25, 297,860.76 and 135,309.78
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Solution
The fourth proportional to 215,813.25, 297,860.76 and 135,309.78 is: 186,751.62
Step by Step Solution
- Step 1: Write the proportion equation
215,813.25 : 297,860.76 = 135,309.78 : x - Step 2: Convert to fraction form
215,813.25/297,860.76 = 135,309.78/x - Step 3: Cross multiply
215,813.25x = 297,860.76 × 135,309.78 - Step 4: Simplify right side
215,813.25x = 40,303,473,906.23 - Step 5: Solve for x
x = 40,303,473,906.23/215,813.25 - Step 6: Final answer
x = 186,751.62
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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.