Finding the Fourth Proportional to 311,996.68, 430,817.87 and 197,477.35
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Solution
The fourth proportional to 311,996.68, 430,817.87 and 197,477.35 is: 272,684.86
Step by Step Solution
- Step 1: Write the proportion equation
311,996.68 : 430,817.87 = 197,477.35 : x - Step 2: Convert to fraction form
311,996.68/430,817.87 = 197,477.35/x - Step 3: Cross multiply
311,996.68x = 430,817.87 × 197,477.35 - Step 4: Simplify right side
311,996.68x = 85,076,771,300.24 - Step 5: Solve for x
x = 85,076,771,300.24/311,996.68 - Step 6: Final answer
x = 272,684.86
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1.5x scale
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.