Finding the Fourth Proportional to 288,679.28, 398,366.71 and 161,357.00
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Solution
The fourth proportional to 288,679.28, 398,366.71 and 161,357.00 is: 222,666.68
Step by Step Solution
- Step 1: Write the proportion equation
288,679.28 : 398,366.71 = 161,357.00 : x - Step 2: Convert to fraction form
288,679.28/398,366.71 = 161,357.00/x - Step 3: Cross multiply
288,679.28x = 398,366.71 × 161,357.00 - Step 4: Simplify right side
288,679.28x = 64,279,254,830.24 - Step 5: Solve for x
x = 64,279,254,830.24/288,679.28 - Step 6: Final answer
x = 222,666.68
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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.