Finding the Fourth Proportional to 389,894.20, 538,533.84 and 282,293.80
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Solution
The fourth proportional to 389,894.20, 538,533.84 and 282,293.80 is: 389,912.86
Step by Step Solution
- Step 1: Write the proportion equation
389,894.20 : 538,533.84 = 282,293.80 : x - Step 2: Convert to fraction form
389,894.20/538,533.84 = 282,293.80/x - Step 3: Cross multiply
389,894.20x = 538,533.84 × 282,293.80 - Step 4: Simplify right side
389,894.20x = 152,024,764,122.19 - Step 5: Solve for x
x = 152,024,764,122.19/389,894.20 - Step 6: Final answer
x = 389,912.86
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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.