Finding the Fourth Proportional to 419,719.05, 629,764.47 and 219,991.95
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Solution
The fourth proportional to 419,719.05, 629,764.47 and 219,991.95 is: 330,085.35
Step by Step Solution
- Step 1: Write the proportion equation
419,719.05 : 629,764.47 = 219,991.95 : x - Step 2: Convert to fraction form
419,719.05/629,764.47 = 219,991.95/x - Step 3: Cross multiply
419,719.05x = 629,764.47 × 219,991.95 - Step 4: Simplify right side
419,719.05x = 138,543,109,547.23 - Step 5: Solve for x
x = 138,543,109,547.23/419,719.05 - Step 6: Final answer
x = 330,085.35
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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.