Finding the Fourth Proportional to 289,378.38, 399,209.19 and 187,437.84
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Solution
The fourth proportional to 289,378.38, 399,209.19 and 187,437.84 is: 258,578.09
Step by Step Solution
- Step 1: Write the proportion equation
289,378.38 : 399,209.19 = 187,437.84 : x - Step 2: Convert to fraction form
289,378.38/399,209.19 = 187,437.84/x - Step 3: Cross multiply
289,378.38x = 399,209.19 × 187,437.84 - Step 4: Simplify right side
289,378.38x = 74,826,908,281.75 - Step 5: Solve for x
x = 74,826,908,281.75/289,378.38 - Step 6: Final answer
x = 258,578.09
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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.