Finding the Fourth Proportional to 189,774.24, 284,431.18 and 139,387.12
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Solution
The fourth proportional to 189,774.24, 284,431.18 and 139,387.12 is: 208,911.62
Step by Step Solution
- Step 1: Write the proportion equation
189,774.24 : 284,431.18 = 139,387.12 : x - Step 2: Convert to fraction form
189,774.24/284,431.18 = 139,387.12/x - Step 3: Cross multiply
189,774.24x = 284,431.18 × 139,387.12 - Step 4: Simplify right side
189,774.24x = 39,646,043,018.40 - Step 5: Solve for x
x = 39,646,043,018.40/189,774.24 - Step 6: Final answer
x = 208,911.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.