Finding the Fourth Proportional to 280,290.65, 420,185.98 and 102,756.26
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Solution
The fourth proportional to 280,290.65, 420,185.98 and 102,756.26 is: 154,042.75
Step by Step Solution
- Step 1: Write the proportion equation
280,290.65 : 420,185.98 = 102,756.26 : x - Step 2: Convert to fraction form
280,290.65/420,185.98 = 102,756.26/x - Step 3: Cross multiply
280,290.65x = 420,185.98 × 102,756.26 - Step 4: Simplify right side
280,290.65x = 43,176,740,988.15 - Step 5: Solve for x
x = 43,176,740,988.15/280,290.65 - Step 6: Final answer
x = 154,042.75
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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.