Finding the Fourth Proportional to 420,357.20, 580,106.94 and 229,381.07
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Solution
The fourth proportional to 420,357.20, 580,106.94 and 229,381.07 is: 316,553.52
Step by Step Solution
- Step 1: Write the proportion equation
420,357.20 : 580,106.94 = 229,381.07 : x - Step 2: Convert to fraction form
420,357.20/580,106.94 = 229,381.07/x - Step 3: Cross multiply
420,357.20x = 580,106.94 × 229,381.07 - Step 4: Simplify right side
420,357.20x = 133,065,552,061.89 - Step 5: Solve for x
x = 133,065,552,061.89/420,357.20 - Step 6: Final answer
x = 316,553.52
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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.