Finding the Fourth Proportional to 280,482.48, 420,778.80 and 102,990.96
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Solution
The fourth proportional to 280,482.48, 420,778.80 and 102,990.96 is: 154,506.66
Step by Step Solution
- Step 1: Write the proportion equation
280,482.48 : 420,778.80 = 102,990.96 : x - Step 2: Convert to fraction form
280,482.48/420,778.80 = 102,990.96/x - Step 3: Cross multiply
280,482.48x = 420,778.80 × 102,990.96 - Step 4: Simplify right side
280,482.48x = 43,336,412,559.65 - Step 5: Solve for x
x = 43,336,412,559.65/280,482.48 - Step 6: Final answer
x = 154,506.66
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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.