Finding the Fourth Proportional to 312,707.80, 431,537.13 and 169,467.84
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Solution
The fourth proportional to 312,707.80, 431,537.13 and 169,467.84 is: 233,865.82
Step by Step Solution
- Step 1: Write the proportion equation
312,707.80 : 431,537.13 = 169,467.84 : x - Step 2: Convert to fraction form
312,707.80/431,537.13 = 169,467.84/x - Step 3: Cross multiply
312,707.80x = 431,537.13 × 169,467.84 - Step 4: Simplify right side
312,707.80x = 73,131,665,300.90 - Step 5: Solve for x
x = 73,131,665,300.90/312,707.80 - Step 6: Final answer
x = 233,865.82
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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.