Finding the Fourth Proportional to 290,801.88, 436,202.96 and 91,137.80
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Solution
The fourth proportional to 290,801.88, 436,202.96 and 91,137.80 is: 136,706.75
Step by Step Solution
- Step 1: Write the proportion equation
290,801.88 : 436,202.96 = 91,137.80 : x - Step 2: Convert to fraction form
290,801.88/436,202.96 = 91,137.80/x - Step 3: Cross multiply
290,801.88x = 436,202.96 × 91,137.80 - Step 4: Simplify right side
290,801.88x = 39,754,578,762.71 - Step 5: Solve for x
x = 39,754,578,762.71/290,801.88 - Step 6: Final answer
x = 136,706.75
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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.