Finding the Fourth Proportional to 399,636.14, 551,491.44 and 218,344.18
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Solution
The fourth proportional to 399,636.14, 551,491.44 and 218,344.18 is: 301,311.45
Step by Step Solution
- Step 1: Write the proportion equation
399,636.14 : 551,491.44 = 218,344.18 : x - Step 2: Convert to fraction form
399,636.14/551,491.44 = 218,344.18/x - Step 3: Cross multiply
399,636.14x = 551,491.44 × 218,344.18 - Step 4: Simplify right side
399,636.14x = 120,414,944,865.09 - Step 5: Solve for x
x = 120,414,944,865.09/399,636.14 - Step 6: Final answer
x = 301,311.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.