Finding the Fourth Proportional to 290,898.61, 436,347.95 and 91,236.44
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Solution
The fourth proportional to 290,898.61, 436,347.95 and 91,236.44 is: 136,854.67
Step by Step Solution
- Step 1: Write the proportion equation
290,898.61 : 436,347.95 = 91,236.44 : x - Step 2: Convert to fraction form
290,898.61/436,347.95 = 91,236.44/x - Step 3: Cross multiply
290,898.61x = 436,347.95 × 91,236.44 - Step 4: Simplify right side
290,898.61x = 39,810,834,193.99 - Step 5: Solve for x
x = 39,810,834,193.99/290,898.61 - Step 6: Final answer
x = 136,854.67
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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.