Finding the Fourth Proportional to 205,884.84, 284,080.70 and 129,359.60
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Solution
The fourth proportional to 205,884.84, 284,080.70 and 129,359.60 is: 178,490.88
Step by Step Solution
- Step 1: Write the proportion equation
205,884.84 : 284,080.70 = 129,359.60 : x - Step 2: Convert to fraction form
205,884.84/284,080.70 = 129,359.60/x - Step 3: Cross multiply
205,884.84x = 284,080.70 × 129,359.60 - Step 4: Simplify right side
205,884.84x = 36,748,565,719.72 - Step 5: Solve for x
x = 36,748,565,719.72/205,884.84 - Step 6: Final answer
x = 178,490.88
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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.