Finding the Fourth Proportional to 288,542.31, 398,208.99 and 159,478.02
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Solution
The fourth proportional to 288,542.31, 398,208.99 and 159,478.02 is: 220,091.05
Step by Step Solution
- Step 1: Write the proportion equation
288,542.31 : 398,208.99 = 159,478.02 : x - Step 2: Convert to fraction form
288,542.31/398,208.99 = 159,478.02/x - Step 3: Cross multiply
288,542.31x = 398,208.99 × 159,478.02 - Step 4: Simplify right side
288,542.31x = 63,505,581,271.40 - Step 5: Solve for x
x = 63,505,581,271.40/288,542.31 - Step 6: Final answer
x = 220,091.05
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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.