Finding the Fourth Proportional to 248,643.12, 343,135.80 and 135,476.40
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Solution
The fourth proportional to 248,643.12, 343,135.80 and 135,476.40 is: 186,961.95
Step by Step Solution
- Step 1: Write the proportion equation
248,643.12 : 343,135.80 = 135,476.40 : x - Step 2: Convert to fraction form
248,643.12/343,135.80 = 135,476.40/x - Step 3: Cross multiply
248,643.12x = 343,135.80 × 135,476.40 - Step 4: Simplify right side
248,643.12x = 46,486,802,895.12 - Step 5: Solve for x
x = 46,486,802,895.12/248,643.12 - Step 6: Final answer
x = 186,961.95
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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.