Finding the Fourth Proportional to 305,239.20, 457,534.80 and 147,364.80
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Solution
The fourth proportional to 305,239.20, 457,534.80 and 147,364.80 is: 220,890.78
Step by Step Solution
- Step 1: Write the proportion equation
305,239.20 : 457,534.80 = 147,364.80 : x - Step 2: Convert to fraction form
305,239.20/457,534.80 = 147,364.80/x - Step 3: Cross multiply
305,239.20x = 457,534.80 × 147,364.80 - Step 4: Simplify right side
305,239.20x = 67,424,524,295.04 - Step 5: Solve for x
x = 67,424,524,295.04/305,239.20 - Step 6: Final answer
x = 220,890.78
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.