Finding the Fourth Proportional to 420,966.78, 580,926.87 and 229,975.26
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Solution
The fourth proportional to 420,966.78, 580,926.87 and 229,975.26 is: 317,361.88
Step by Step Solution
- Step 1: Write the proportion equation
420,966.78 : 580,926.87 = 229,975.26 : x - Step 2: Convert to fraction form
420,966.78/580,926.87 = 229,975.26/x - Step 3: Cross multiply
420,966.78x = 580,926.87 × 229,975.26 - Step 4: Simplify right side
420,966.78x = 133,598,807,969.24 - Step 5: Solve for x
x = 133,598,807,969.24/420,966.78 - Step 6: Final answer
x = 317,361.88
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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.