Finding the Fourth Proportional to 178,428.96, 245,613.84 and 154,218.80
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Solution
The fourth proportional to 178,428.96, 245,613.84 and 154,218.80 is: 212,287.69
Step by Step Solution
- Step 1: Write the proportion equation
178,428.96 : 245,613.84 = 154,218.80 : x - Step 2: Convert to fraction form
178,428.96/245,613.84 = 154,218.80/x - Step 3: Cross multiply
178,428.96x = 245,613.84 × 154,218.80 - Step 4: Simplify right side
178,428.96x = 37,878,271,668.19 - Step 5: Solve for x
x = 37,878,271,668.19/178,428.96 - Step 6: Final answer
x = 212,287.69
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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.