Finding the Fourth Proportional to 289,939.07, 434,733.80 and 129,986.07
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Solution
The fourth proportional to 289,939.07, 434,733.80 and 129,986.07 is: 194,900.74
Step by Step Solution
- Step 1: Write the proportion equation
289,939.07 : 434,733.80 = 129,986.07 : x - Step 2: Convert to fraction form
289,939.07/434,733.80 = 129,986.07/x - Step 3: Cross multiply
289,939.07x = 434,733.80 × 129,986.07 - Step 4: Simplify right side
289,939.07x = 56,509,338,158.17 - Step 5: Solve for x
x = 56,509,338,158.17/289,939.07 - Step 6: Final answer
x = 194,900.74
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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.