Finding the Fourth Proportional to 243,339.75, 364,769.73 and 85,457.49
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Solution
The fourth proportional to 243,339.75, 364,769.73 and 85,457.49 is: 128,101.99
Step by Step Solution
- Step 1: Write the proportion equation
243,339.75 : 364,769.73 = 85,457.49 : x - Step 2: Convert to fraction form
243,339.75/364,769.73 = 85,457.49/x - Step 3: Cross multiply
243,339.75x = 364,769.73 × 85,457.49 - Step 4: Simplify right side
243,339.75x = 31,172,305,553.78 - Step 5: Solve for x
x = 31,172,305,553.78/243,339.75 - Step 6: Final answer
x = 128,101.99
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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.