Finding the Fourth Proportional to 309,288.06, 426,814.92 and 283,896.99
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Solution
The fourth proportional to 309,288.06, 426,814.92 and 283,896.99 is: 391,775.46
Step by Step Solution
- Step 1: Write the proportion equation
309,288.06 : 426,814.92 = 283,896.99 : x - Step 2: Convert to fraction form
309,288.06/426,814.92 = 283,896.99/x - Step 3: Cross multiply
309,288.06x = 426,814.92 × 283,896.99 - Step 4: Simplify right side
309,288.06x = 121,171,471,075.09 - Step 5: Solve for x
x = 121,171,471,075.09/309,288.06 - Step 6: Final answer
x = 391,775.46
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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.