Finding the Fourth Proportional to 288,605.93, 398,278.69 and 159,542.31
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Solution
The fourth proportional to 288,605.93, 398,278.69 and 159,542.31 is: 220,169.78
Step by Step Solution
- Step 1: Write the proportion equation
288,605.93 : 398,278.69 = 159,542.31 : x - Step 2: Convert to fraction form
288,605.93/398,278.69 = 159,542.31/x - Step 3: Cross multiply
288,605.93x = 398,278.69 × 159,542.31 - Step 4: Simplify right side
288,605.93x = 63,542,302,823.21 - Step 5: Solve for x
x = 63,542,302,823.21/288,605.93 - Step 6: Final answer
x = 220,169.78
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1.5x scale
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.