Finding the Fourth Proportional to 288,990.90, 433,489.53 and 129,074.97
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Solution
The fourth proportional to 288,990.90, 433,489.53 and 129,074.97 is: 193,613.88
Step by Step Solution
- Step 1: Write the proportion equation
288,990.90 : 433,489.53 = 129,074.97 : x - Step 2: Convert to fraction form
288,990.90/433,489.53 = 129,074.97/x - Step 3: Cross multiply
288,990.90x = 433,489.53 × 129,074.97 - Step 4: Simplify right side
288,990.90x = 55,952,648,080.06 - Step 5: Solve for x
x = 55,952,648,080.06/288,990.90 - Step 6: Final answer
x = 193,613.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.