Finding the Fourth Proportional to 282,406.91, 389,722.19 and 155,090.70
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Solution
The fourth proportional to 282,406.91, 389,722.19 and 155,090.70 is: 214,025.53
Step by Step Solution
- Step 1: Write the proportion equation
282,406.91 : 389,722.19 = 155,090.70 : x - Step 2: Convert to fraction form
282,406.91/389,722.19 = 155,090.70/x - Step 3: Cross multiply
282,406.91x = 389,722.19 × 155,090.70 - Step 4: Simplify right side
282,406.91x = 60,442,286,477.18 - Step 5: Solve for x
x = 60,442,286,477.18/282,406.91 - Step 6: Final answer
x = 214,025.53
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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.