Finding the Fourth Proportional to 282,128.40, 389,337.66 and 154,804.95
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Solution
The fourth proportional to 282,128.40, 389,337.66 and 154,804.95 is: 213,631.09
Step by Step Solution
- Step 1: Write the proportion equation
282,128.40 : 389,337.66 = 154,804.95 : x - Step 2: Convert to fraction form
282,128.40/389,337.66 = 154,804.95/x - Step 3: Cross multiply
282,128.40x = 389,337.66 × 154,804.95 - Step 4: Simplify right side
282,128.40x = 60,271,396,989.42 - Step 5: Solve for x
x = 60,271,396,989.42/282,128.40 - Step 6: Final answer
x = 213,631.09
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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.