Finding the Fourth Proportional to 259,865.14, 389,953.20 and 112,121.14
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Solution
The fourth proportional to 259,865.14, 389,953.20 and 112,121.14 is: 168,248.80
Step by Step Solution
- Step 1: Write the proportion equation
259,865.14 : 389,953.20 = 112,121.14 : x - Step 2: Convert to fraction form
259,865.14/389,953.20 = 112,121.14/x - Step 3: Cross multiply
259,865.14x = 389,953.20 × 112,121.14 - Step 4: Simplify right side
259,865.14x = 43,721,997,330.65 - Step 5: Solve for x
x = 43,721,997,330.65/259,865.14 - Step 6: Final answer
x = 168,248.80
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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.