Finding the Fourth Proportional to 313,988.20, 471,011.10 and 103,626.60
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Solution
The fourth proportional to 313,988.20, 471,011.10 and 103,626.60 is: 155,449.40
Step by Step Solution
- Step 1: Write the proportion equation
313,988.20 : 471,011.10 = 103,626.60 : x - Step 2: Convert to fraction form
313,988.20/471,011.10 = 103,626.60/x - Step 3: Cross multiply
313,988.20x = 471,011.10 × 103,626.60 - Step 4: Simplify right side
313,988.20x = 48,809,278,855.26 - Step 5: Solve for x
x = 48,809,278,855.26/313,988.20 - Step 6: Final answer
x = 155,449.40
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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.