Finding the Fourth Proportional to 420,357.30, 580,107.07 and 229,381.17
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Solution
The fourth proportional to 420,357.30, 580,107.07 and 229,381.17 is: 316,553.65
Step by Step Solution
- Step 1: Write the proportion equation
420,357.30 : 580,107.07 = 229,381.17 : x - Step 2: Convert to fraction form
420,357.30/580,107.07 = 229,381.17/x - Step 3: Cross multiply
420,357.30x = 580,107.07 × 229,381.17 - Step 4: Simplify right side
420,357.30x = 133,065,635,262.93 - Step 5: Solve for x
x = 133,065,635,262.93/420,357.30 - Step 6: Final answer
x = 316,553.65
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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.