Finding the Fourth Proportional to 206,873.13, 310,309.70 and 66,631.75
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Solution
The fourth proportional to 206,873.13, 310,309.70 and 66,631.75 is: 99,947.63
Step by Step Solution
- Step 1: Write the proportion equation
206,873.13 : 310,309.70 = 66,631.75 : x - Step 2: Convert to fraction form
206,873.13/310,309.70 = 66,631.75/x - Step 3: Cross multiply
206,873.13x = 310,309.70 × 66,631.75 - Step 4: Simplify right side
206,873.13x = 20,676,478,352.98 - Step 5: Solve for x
x = 20,676,478,352.98/206,873.13 - Step 6: Final answer
x = 99,947.63
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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.