Finding the Fourth Proportional to 312,655.20, 431,438.64 and 176,701.44
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Solution
The fourth proportional to 312,655.20, 431,438.64 and 176,701.44 is: 243,833.56
Step by Step Solution
- Step 1: Write the proportion equation
312,655.20 : 431,438.64 = 176,701.44 : x - Step 2: Convert to fraction form
312,655.20/431,438.64 = 176,701.44/x - Step 3: Cross multiply
312,655.20x = 431,438.64 × 176,701.44 - Step 4: Simplify right side
312,655.20x = 76,235,828,959.64 - Step 5: Solve for x
x = 76,235,828,959.64/312,655.20 - Step 6: Final answer
x = 243,833.56
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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.