Finding the Fourth Proportional to 312,647,648.84, 431,452,373.28 and 178,683,330.14
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Solution
The fourth proportional to 312,647,648.84, 431,452,373.28 and 178,683,330.14 is: 246,582,205.69
Step by Step Solution
- Step 1: Write the proportion equation
312,647,648.84 : 431,452,373.28 = 178,683,330.14 : x - Step 2: Convert to fraction form
312,647,648.84/431,452,373.28 = 178,683,330.14/x - Step 3: Cross multiply
312,647,648.84x = 431,452,373.28 × 178,683,330.14 - Step 4: Simplify right side
312,647,648.84x = 77,093,346,854,476,736 - Step 5: Solve for x
x = 77,093,346,854,476,736/312,647,648.84 - Step 6: Final answer
x = 246,582,205.69
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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.