Finding the Fourth Proportional to 278,706.66, 418,080.84 and 79,043.12
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Solution
The fourth proportional to 278,706.66, 418,080.84 and 79,043.12 is: 118,570.60
Step by Step Solution
- Step 1: Write the proportion equation
278,706.66 : 418,080.84 = 79,043.12 : x - Step 2: Convert to fraction form
278,706.66/418,080.84 = 79,043.12/x - Step 3: Cross multiply
278,706.66x = 418,080.84 × 79,043.12 - Step 4: Simplify right side
278,706.66x = 33,046,415,983.13 - Step 5: Solve for x
x = 33,046,415,983.13/278,706.66 - Step 6: Final answer
x = 118,570.60
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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.