Finding the Fourth Proportional to 312,178.98, 430,808.08 and 168,938.99
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Solution
The fourth proportional to 312,178.98, 430,808.08 and 168,938.99 is: 233,136.39
Step by Step Solution
- Step 1: Write the proportion equation
312,178.98 : 430,808.08 = 168,938.99 : x - Step 2: Convert to fraction form
312,178.98/430,808.08 = 168,938.99/x - Step 3: Cross multiply
312,178.98x = 430,808.08 × 168,938.99 - Step 4: Simplify right side
312,178.98x = 72,780,279,765.00 - Step 5: Solve for x
x = 72,780,279,765.00/312,178.98 - Step 6: Final answer
x = 233,136.39
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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.