Finding the Fourth Proportional to 283,205.68, 390,820.88 and 155,878.56
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Solution
The fourth proportional to 283,205.68, 390,820.88 and 155,878.56 is: 215,110.78
Step by Step Solution
- Step 1: Write the proportion equation
283,205.68 : 390,820.88 = 155,878.56 : x - Step 2: Convert to fraction form
283,205.68/390,820.88 = 155,878.56/x - Step 3: Cross multiply
283,205.68x = 390,820.88 × 155,878.56 - Step 4: Simplify right side
283,205.68x = 60,920,595,992.33 - Step 5: Solve for x
x = 60,920,595,992.33/283,205.68 - Step 6: Final answer
x = 215,110.78
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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.