Finding the Fourth Proportional to 285,996.81, 394,668.08 and 156,934.88
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Solution
The fourth proportional to 285,996.81, 394,668.08 and 156,934.88 is: 216,566.02
Step by Step Solution
- Step 1: Write the proportion equation
285,996.81 : 394,668.08 = 156,934.88 : x - Step 2: Convert to fraction form
285,996.81/394,668.08 = 156,934.88/x - Step 3: Cross multiply
285,996.81x = 394,668.08 × 156,934.88 - Step 4: Simplify right side
285,996.81x = 61,937,190,187.89 - Step 5: Solve for x
x = 61,937,190,187.89/285,996.81 - Step 6: Final answer
x = 216,566.02
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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.