Finding the Fourth Proportional to 420,412.44, 580,181.40 and 229,438.14
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Solution
The fourth proportional to 420,412.44, 580,181.40 and 229,438.14 is: 316,631.31
Step by Step Solution
- Step 1: Write the proportion equation
420,412.44 : 580,181.40 = 229,438.14 : x - Step 2: Convert to fraction form
420,412.44/580,181.40 = 229,438.14/x - Step 3: Cross multiply
420,412.44x = 580,181.40 × 229,438.14 - Step 4: Simplify right side
420,412.44x = 133,115,741,278.60 - Step 5: Solve for x
x = 133,115,741,278.60/420,412.44 - Step 6: Final answer
x = 316,631.31
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1.5x scale
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.