Finding the Fourth Proportional to 205,789.10, 308,473.13 and 139,236.26
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Solution
The fourth proportional to 205,789.10, 308,473.13 and 139,236.26 is: 208,711.95
Step by Step Solution
- Step 1: Write the proportion equation
205,789.10 : 308,473.13 = 139,236.26 : x - Step 2: Convert to fraction form
205,789.10/308,473.13 = 139,236.26/x - Step 3: Cross multiply
205,789.10x = 308,473.13 × 139,236.26 - Step 4: Simplify right side
205,789.10x = 42,950,642,693.15 - Step 5: Solve for x
x = 42,950,642,693.15/205,789.10 - Step 6: Final answer
x = 208,711.95
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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.