Finding the Fourth Proportional to 282,751.26, 390,197.16 and 155,427.63
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Solution
The fourth proportional to 282,751.26, 390,197.16 and 155,427.63 is: 214,490.36
Step by Step Solution
- Step 1: Write the proportion equation
282,751.26 : 390,197.16 = 155,427.63 : x - Step 2: Convert to fraction form
282,751.26/390,197.16 = 155,427.63/x - Step 3: Cross multiply
282,751.26x = 390,197.16 × 155,427.63 - Step 4: Simplify right side
282,751.26x = 60,647,419,811.53 - Step 5: Solve for x
x = 60,647,419,811.53/282,751.26 - Step 6: Final answer
x = 214,490.36
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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.