Finding the Fourth Proportional to 438,079.80, 657,119.70 and 272,191.80
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Solution
The fourth proportional to 438,079.80, 657,119.70 and 272,191.80 is: 408,287.70
Step by Step Solution
- Step 1: Write the proportion equation
438,079.80 : 657,119.70 = 272,191.80 : x - Step 2: Convert to fraction form
438,079.80/657,119.70 = 272,191.80/x - Step 3: Cross multiply
438,079.80x = 657,119.70 × 272,191.80 - Step 4: Simplify right side
438,079.80x = 178,862,593,958.46 - Step 5: Solve for x
x = 178,862,593,958.46/438,079.80 - Step 6: Final answer
x = 408,287.70
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1.5x scale
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.