Finding the Fourth Proportional to 312,448.86, 431,177.28 and 169,205.63
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Solution
The fourth proportional to 312,448.86, 431,177.28 and 169,205.63 is: 233,502.61
Step by Step Solution
- Step 1: Write the proportion equation
312,448.86 : 431,177.28 = 169,205.63 : x - Step 2: Convert to fraction form
312,448.86/431,177.28 = 169,205.63/x - Step 3: Cross multiply
312,448.86x = 431,177.28 × 169,205.63 - Step 4: Simplify right side
312,448.86x = 72,957,623,304.09 - Step 5: Solve for x
x = 72,957,623,304.09/312,448.86 - Step 6: Final answer
x = 233,502.61
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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.