Finding the Fourth Proportional to 283,534.05, 391,272.62 and 156,214.20
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Solution
The fourth proportional to 283,534.05, 391,272.62 and 156,214.20 is: 215,573.19
Step by Step Solution
- Step 1: Write the proportion equation
283,534.05 : 391,272.62 = 156,214.20 : x - Step 2: Convert to fraction form
283,534.05/391,272.62 = 156,214.20/x - Step 3: Cross multiply
283,534.05x = 391,272.62 × 156,214.20 - Step 4: Simplify right side
283,534.05x = 61,122,338,534.13 - Step 5: Solve for x
x = 61,122,338,534.13/283,534.05 - Step 6: Final answer
x = 215,573.19
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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.