Finding the Fourth Proportional to 311,417.06, 429,755.54 and 168,177.09
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Solution
The fourth proportional to 311,417.06, 429,755.54 and 168,177.09 is: 232,084.38
Step by Step Solution
- Step 1: Write the proportion equation
311,417.06 : 429,755.54 = 168,177.09 : x - Step 2: Convert to fraction form
311,417.06/429,755.54 = 168,177.09/x - Step 3: Cross multiply
311,417.06x = 429,755.54 × 168,177.09 - Step 4: Simplify right side
311,417.06x = 72,275,035,287.69 - Step 5: Solve for x
x = 72,275,035,287.69/311,417.06 - Step 6: Final answer
x = 232,084.38
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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.