Finding the Fourth Proportional to 282,940.74, 390,456.18 and 155,613.60
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Solution
The fourth proportional to 282,940.74, 390,456.18 and 155,613.60 is: 214,745.65
Step by Step Solution
- Step 1: Write the proportion equation
282,940.74 : 390,456.18 = 155,613.60 : x - Step 2: Convert to fraction form
282,940.74/390,456.18 = 155,613.60/x - Step 3: Cross multiply
282,940.74x = 390,456.18 × 155,613.60 - Step 4: Simplify right side
282,940.74x = 60,760,291,812.05 - Step 5: Solve for x
x = 60,760,291,812.05/282,940.74 - Step 6: Final answer
x = 214,745.65
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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.