Finding the Fourth Proportional to 203,455.13, 280,771.45 and 112,814.91
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Solution
The fourth proportional to 203,455.13, 280,771.45 and 112,814.91 is: 155,686.45
Step by Step Solution
- Step 1: Write the proportion equation
203,455.13 : 280,771.45 = 112,814.91 : x - Step 2: Convert to fraction form
203,455.13/280,771.45 = 112,814.91/x - Step 3: Cross multiply
203,455.13x = 280,771.45 × 112,814.91 - Step 4: Simplify right side
203,455.13x = 31,675,205,580.28 - Step 5: Solve for x
x = 31,675,205,580.28/203,455.13 - Step 6: Final answer
x = 155,686.45
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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.