Finding the Fourth Proportional to 312,651.68, 431,433.76 and 176,697.28
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Solution
The fourth proportional to 312,651.68, 431,433.76 and 176,697.28 is: 243,827.80
Step by Step Solution
- Step 1: Write the proportion equation
312,651.68 : 431,433.76 = 176,697.28 : x - Step 2: Convert to fraction form
312,651.68/431,433.76 = 176,697.28/x - Step 3: Cross multiply
312,651.68x = 431,433.76 × 176,697.28 - Step 4: Simplify right side
312,651.68x = 76,233,171,892.17 - Step 5: Solve for x
x = 76,233,171,892.17/312,651.68 - Step 6: Final answer
x = 243,827.80
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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.