Finding the Fourth Proportional to 312,530.13, 431,266.01 and 176,575.88
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Solution
The fourth proportional to 312,530.13, 431,266.01 and 176,575.88 is: 243,660.26
Step by Step Solution
- Step 1: Write the proportion equation
312,530.13 : 431,266.01 = 176,575.88 : x - Step 2: Convert to fraction form
312,530.13/431,266.01 = 176,575.88/x - Step 3: Cross multiply
312,530.13x = 431,266.01 × 176,575.88 - Step 4: Simplify right side
312,530.13x = 76,151,172,190.63 - Step 5: Solve for x
x = 76,151,172,190.63/312,530.13 - Step 6: Final answer
x = 243,660.26
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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.