Finding the Fourth Proportional to 315,589.28, 435,381.09 and 192,988.80
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Solution
The fourth proportional to 315,589.28, 435,381.09 and 192,988.80 is: 266,243.75
Step by Step Solution
- Step 1: Write the proportion equation
315,589.28 : 435,381.09 = 192,988.80 : x - Step 2: Convert to fraction form
315,589.28/435,381.09 = 192,988.80/x - Step 3: Cross multiply
315,589.28x = 435,381.09 × 192,988.80 - Step 4: Simplify right side
315,589.28x = 84,023,674,101.79 - Step 5: Solve for x
x = 84,023,674,101.79/315,589.28 - Step 6: Final answer
x = 266,243.75
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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.