Finding the Fourth Proportional to 427,287.68, 640,930.70 and 161,107.92
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Solution
The fourth proportional to 427,287.68, 640,930.70 and 161,107.92 is: 241,661.57
Step by Step Solution
- Step 1: Write the proportion equation
427,287.68 : 640,930.70 = 161,107.92 : x - Step 2: Convert to fraction form
427,287.68/640,930.70 = 161,107.92/x - Step 3: Cross multiply
427,287.68x = 640,930.70 × 161,107.92 - Step 4: Simplify right side
427,287.68x = 103,259,011,941.14 - Step 5: Solve for x
x = 103,259,011,941.14/427,287.68 - Step 6: Final answer
x = 241,661.57
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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.