Finding the Fourth Proportional to 288,373.12, 397,953.56 and 159,311.63
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Solution
The fourth proportional to 288,373.12, 397,953.56 and 159,311.63 is: 219,849.31
Step by Step Solution
- Step 1: Write the proportion equation
288,373.12 : 397,953.56 = 159,311.63 : x - Step 2: Convert to fraction form
288,373.12/397,953.56 = 159,311.63/x - Step 3: Cross multiply
288,373.12x = 397,953.56 × 159,311.63 - Step 4: Simplify right side
288,373.12x = 63,398,631,701.07 - Step 5: Solve for x
x = 63,398,631,701.07/288,373.12 - Step 6: Final answer
x = 219,849.31
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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.