Finding the Fourth Proportional to 310,067.34, 427,939.71 and 189,278.94
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Solution
The fourth proportional to 310,067.34, 427,939.71 and 189,278.94 is: 261,233.49
Step by Step Solution
- Step 1: Write the proportion equation
310,067.34 : 427,939.71 = 189,278.94 : x - Step 2: Convert to fraction form
310,067.34/427,939.71 = 189,278.94/x - Step 3: Cross multiply
310,067.34x = 427,939.71 × 189,278.94 - Step 4: Simplify right side
310,067.34x = 80,999,974,692.71 - Step 5: Solve for x
x = 80,999,974,692.71/310,067.34 - Step 6: Final answer
x = 261,233.49
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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.