Finding the Fourth Proportional to 420,358.21, 580,108.32 and 229,382.08
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Solution
The fourth proportional to 420,358.21, 580,108.32 and 229,382.08 is: 316,554.90
Step by Step Solution
- Step 1: Write the proportion equation
420,358.21 : 580,108.32 = 229,382.08 : x - Step 2: Convert to fraction form
420,358.21/580,108.32 = 229,382.08/x - Step 3: Cross multiply
420,358.21x = 580,108.32 × 229,382.08 - Step 4: Simplify right side
420,358.21x = 133,066,450,166.36 - Step 5: Solve for x
x = 133,066,450,166.36/420,358.21 - Step 6: Final answer
x = 316,554.90
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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.