Finding the Fourth Proportional to 206,918.09, 310,156.46 and 117,980.09
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Solution
The fourth proportional to 206,918.09, 310,156.46 and 117,980.09 is: 176,844.31
Step by Step Solution
- Step 1: Write the proportion equation
206,918.09 : 310,156.46 = 117,980.09 : x - Step 2: Convert to fraction form
206,918.09/310,156.46 = 117,980.09/x - Step 3: Cross multiply
206,918.09x = 310,156.46 × 117,980.09 - Step 4: Simplify right side
206,918.09x = 36,592,288,135.22 - Step 5: Solve for x
x = 36,592,288,135.22/206,918.09 - Step 6: Final answer
x = 176,844.31
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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.