Finding the Fourth Proportional to 395,639.55, 545,981.85 and 214,355.99
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Solution
The fourth proportional to 395,639.55, 545,981.85 and 214,355.99 is: 295,810.87
Step by Step Solution
- Step 1: Write the proportion equation
395,639.55 : 545,981.85 = 214,355.99 : x - Step 2: Convert to fraction form
395,639.55/545,981.85 = 214,355.99/x - Step 3: Cross multiply
395,639.55x = 545,981.85 × 214,355.99 - Step 4: Simplify right side
395,639.55x = 117,034,481,343.74 - Step 5: Solve for x
x = 117,034,481,343.74/395,639.55 - Step 6: Final answer
x = 295,810.87
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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.