Finding the Fourth Proportional to 312,577.36, 431,355.68 and 169,337.28
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Solution
The fourth proportional to 312,577.36, 431,355.68 and 169,337.28 is: 233,684.86
Step by Step Solution
- Step 1: Write the proportion equation
312,577.36 : 431,355.68 = 169,337.28 : x - Step 2: Convert to fraction form
312,577.36/431,355.68 = 169,337.28/x - Step 3: Cross multiply
312,577.36x = 431,355.68 × 169,337.28 - Step 4: Simplify right side
312,577.36x = 73,044,597,563.75 - Step 5: Solve for x
x = 73,044,597,563.75/312,577.36 - Step 6: Final answer
x = 233,684.86
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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.