Finding the Fourth Proportional to 319,318.09, 440,649.53 and 176,078.09
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Solution
The fourth proportional to 319,318.09, 440,649.53 and 176,078.09 is: 242,982.56
Step by Step Solution
- Step 1: Write the proportion equation
319,318.09 : 440,649.53 = 176,078.09 : x - Step 2: Convert to fraction form
319,318.09/440,649.53 = 176,078.09/x - Step 3: Cross multiply
319,318.09x = 440,649.53 × 176,078.09 - Step 4: Simplify right side
319,318.09x = 77,588,727,601.80 - Step 5: Solve for x
x = 77,588,727,601.80/319,318.09 - Step 6: Final answer
x = 242,982.56
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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.