Finding the Fourth Proportional to 278,710.88, 418,037.84 and 76,324.98
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Solution
The fourth proportional to 278,710.88, 418,037.84 and 76,324.98 is: 114,479.67
Step by Step Solution
- Step 1: Write the proportion equation
278,710.88 : 418,037.84 = 76,324.98 : x - Step 2: Convert to fraction form
278,710.88/418,037.84 = 76,324.98/x - Step 3: Cross multiply
278,710.88x = 418,037.84 × 76,324.98 - Step 4: Simplify right side
278,710.88x = 31,906,729,777.24 - Step 5: Solve for x
x = 31,906,729,777.24/278,710.88 - Step 6: Final answer
x = 114,479.67
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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.