Finding the Fourth Proportional to 257,873.28, 386,682.79 and 106,042.65
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Solution
The fourth proportional to 257,873.28, 386,682.79 and 106,042.65 is: 159,011.70
Step by Step Solution
- Step 1: Write the proportion equation
257,873.28 : 386,682.79 = 106,042.65 : x - Step 2: Convert to fraction form
257,873.28/386,682.79 = 106,042.65/x - Step 3: Cross multiply
257,873.28x = 386,682.79 × 106,042.65 - Step 4: Simplify right side
257,873.28x = 41,004,867,760.99 - Step 5: Solve for x
x = 41,004,867,760.99/257,873.28 - Step 6: Final answer
x = 159,011.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.