Finding the Fourth Proportional to 393,785.50, 543,423.99 and 214,937.50
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Solution
The fourth proportional to 393,785.50, 543,423.99 and 214,937.50 is: 296,613.75
Step by Step Solution
- Step 1: Write the proportion equation
393,785.50 : 543,423.99 = 214,937.50 : x - Step 2: Convert to fraction form
393,785.50/543,423.99 = 214,937.50/x - Step 3: Cross multiply
393,785.50x = 543,423.99 × 214,937.50 - Step 4: Simplify right side
393,785.50x = 116,802,193,850.63 - Step 5: Solve for x
x = 116,802,193,850.63/393,785.50 - Step 6: Final answer
x = 296,613.75
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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.