Finding the Fourth Proportional to 420,885.19, 580,804.68 and 229,905.37
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Solution
The fourth proportional to 420,885.19, 580,804.68 and 229,905.37 is: 317,260.19
Step by Step Solution
- Step 1: Write the proportion equation
420,885.19 : 580,804.68 = 229,905.37 : x - Step 2: Convert to fraction form
420,885.19/580,804.68 = 229,905.37/x - Step 3: Cross multiply
420,885.19x = 580,804.68 × 229,905.37 - Step 4: Simplify right side
420,885.19x = 133,530,114,853.13 - Step 5: Solve for x
x = 133,530,114,853.13/420,885.19 - Step 6: Final answer
x = 317,260.19
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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.