Finding the Fourth Proportional to 382,956.20, 528,465.30 and 213,186.68
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Solution
The fourth proportional to 382,956.20, 528,465.30 and 213,186.68 is: 294,189.68
Step by Step Solution
- Step 1: Write the proportion equation
382,956.20 : 528,465.30 = 213,186.68 : x - Step 2: Convert to fraction form
382,956.20/528,465.30 = 213,186.68/x - Step 3: Cross multiply
382,956.20x = 528,465.30 × 213,186.68 - Step 4: Simplify right side
382,956.20x = 112,661,762,802.20 - Step 5: Solve for x
x = 112,661,762,802.20/382,956.20 - Step 6: Final answer
x = 294,189.68
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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.