Finding the Fourth Proportional to 283,779.18, 391,617.99 and 156,459.42
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Solution
The fourth proportional to 283,779.18, 391,617.99 and 156,459.42 is: 215,915.50
Step by Step Solution
- Step 1: Write the proportion equation
283,779.18 : 391,617.99 = 156,459.42 : x - Step 2: Convert to fraction form
283,779.18/391,617.99 = 156,459.42/x - Step 3: Cross multiply
283,779.18x = 391,617.99 × 156,459.42 - Step 4: Simplify right side
283,779.18x = 61,272,323,576.97 - Step 5: Solve for x
x = 61,272,323,576.97/283,779.18 - Step 6: Final answer
x = 215,915.50
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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.