Finding the Fourth Proportional to 236,616.39, 326,528.15 and 129,186.09
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Solution
The fourth proportional to 236,616.39, 326,528.15 and 129,186.09 is: 178,275.45
Step by Step Solution
- Step 1: Write the proportion equation
236,616.39 : 326,528.15 = 129,186.09 : x - Step 2: Convert to fraction form
236,616.39/326,528.15 = 129,186.09/x - Step 3: Cross multiply
236,616.39x = 326,528.15 × 129,186.09 - Step 4: Simplify right side
236,616.39x = 42,182,894,327.50 - Step 5: Solve for x
x = 42,182,894,327.50/236,616.39 - Step 6: Final answer
x = 178,275.45
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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.