Finding the Fourth Proportional to 288,858.10, 398,724.39 and 198,513.13
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Solution
The fourth proportional to 288,858.10, 398,724.39 and 198,513.13 is: 274,016.99
Step by Step Solution
- Step 1: Write the proportion equation
288,858.10 : 398,724.39 = 198,513.13 : x - Step 2: Convert to fraction form
288,858.10/398,724.39 = 198,513.13/x - Step 3: Cross multiply
288,858.10x = 398,724.39 × 198,513.13 - Step 4: Simplify right side
288,858.10x = 79,152,026,666.24 - Step 5: Solve for x
x = 79,152,026,666.24/288,858.10 - Step 6: Final answer
x = 274,016.99
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1.5x scale
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.