Finding the Fourth Proportional to 343,851.81, 515,753.31 and 91,126.68
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Solution
The fourth proportional to 343,851.81, 515,753.31 and 91,126.68 is: 136,683.55
Step by Step Solution
- Step 1: Write the proportion equation
343,851.81 : 515,753.31 = 91,126.68 : x - Step 2: Convert to fraction form
343,851.81/515,753.31 = 91,126.68/x - Step 3: Cross multiply
343,851.81x = 515,753.31 × 91,126.68 - Step 4: Simplify right side
343,851.81x = 46,998,886,839.31 - Step 5: Solve for x
x = 46,998,886,839.31/343,851.81 - Step 6: Final answer
x = 136,683.55
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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.