Finding the Fourth Proportional to 288,697.19, 398,402.62 and 161,372.68
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Solution
The fourth proportional to 288,697.19, 398,402.62 and 161,372.68 is: 222,694.58
Step by Step Solution
- Step 1: Write the proportion equation
288,697.19 : 398,402.62 = 161,372.68 : x - Step 2: Convert to fraction form
288,697.19/398,402.62 = 161,372.68/x - Step 3: Cross multiply
288,697.19x = 398,402.62 × 161,372.68 - Step 4: Simplify right side
288,697.19x = 64,291,297,108.98 - Step 5: Solve for x
x = 64,291,297,108.98/288,697.19 - Step 6: Final answer
x = 222,694.58
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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.