Finding the Fourth Proportional to 262,478.88, 393,781.02 and 84,986.08
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Solution
The fourth proportional to 262,478.88, 393,781.02 and 84,986.08 is: 127,499.42
Step by Step Solution
- Step 1: Write the proportion equation
262,478.88 : 393,781.02 = 84,986.08 : x - Step 2: Convert to fraction form
262,478.88/393,781.02 = 84,986.08/x - Step 3: Cross multiply
262,478.88x = 393,781.02 × 84,986.08 - Step 4: Simplify right side
262,478.88x = 33,465,905,268.20 - Step 5: Solve for x
x = 33,465,905,268.20/262,478.88 - Step 6: Final answer
x = 127,499.42
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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.