Finding the Fourth Proportional to 398,677.68, 550,186.29 and 243,654.08
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Solution
The fourth proportional to 398,677.68, 550,186.29 and 243,654.08 is: 336,249.40
Step by Step Solution
- Step 1: Write the proportion equation
398,677.68 : 550,186.29 = 243,654.08 : x - Step 2: Convert to fraction form
398,677.68/550,186.29 = 243,654.08/x - Step 3: Cross multiply
398,677.68x = 550,186.29 × 243,654.08 - Step 4: Simplify right side
398,677.68x = 134,055,131,567.63 - Step 5: Solve for x
x = 134,055,131,567.63/398,677.68 - Step 6: Final answer
x = 336,249.40
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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.