Finding the Fourth Proportional to 280,590.84, 420,943.68 and 103,099.68
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Solution
The fourth proportional to 280,590.84, 420,943.68 and 103,099.68 is: 154,670.62
Step by Step Solution
- Step 1: Write the proportion equation
280,590.84 : 420,943.68 = 103,099.68 : x - Step 2: Convert to fraction form
280,590.84/420,943.68 = 103,099.68/x - Step 3: Cross multiply
280,590.84x = 420,943.68 × 103,099.68 - Step 4: Simplify right side
280,590.84x = 43,399,158,706.02 - Step 5: Solve for x
x = 43,399,158,706.02/280,590.84 - Step 6: Final answer
x = 154,670.62
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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.