Finding the Fourth Proportional to 283,742.92, 391,549.98 and 156,393.64
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Solution
The fourth proportional to 283,742.92, 391,549.98 and 156,393.64 is: 215,814.82
Step by Step Solution
- Step 1: Write the proportion equation
283,742.92 : 391,549.98 = 156,393.64 : x - Step 2: Convert to fraction form
283,742.92/391,549.98 = 156,393.64/x - Step 3: Cross multiply
283,742.92x = 391,549.98 × 156,393.64 - Step 4: Simplify right side
283,742.92x = 61,235,926,614.13 - Step 5: Solve for x
x = 61,235,926,614.13/283,742.92 - Step 6: Final answer
x = 215,814.82
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1.5x scale
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.