Finding the Fourth Proportional to 426,178.08, 639,371.25 and 141,868.08
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Solution
The fourth proportional to 426,178.08, 639,371.25 and 141,868.08 is: 212,836.78
Step by Step Solution
- Step 1: Write the proportion equation
426,178.08 : 639,371.25 = 141,868.08 : x - Step 2: Convert to fraction form
426,178.08/639,371.25 = 141,868.08/x - Step 3: Cross multiply
426,178.08x = 639,371.25 × 141,868.08 - Step 4: Simplify right side
426,178.08x = 90,706,371,644.70 - Step 5: Solve for x
x = 90,706,371,644.70/426,178.08 - Step 6: Final answer
x = 212,836.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.