Finding the Fourth Proportional to 290,963.30, 436,445.48 and 91,299.02
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Solution
The fourth proportional to 290,963.30, 436,445.48 and 91,299.02 is: 136,948.70
Step by Step Solution
- Step 1: Write the proportion equation
290,963.30 : 436,445.48 = 91,299.02 : x - Step 2: Convert to fraction form
290,963.30/436,445.48 = 91,299.02/x - Step 3: Cross multiply
290,963.30x = 436,445.48 × 91,299.02 - Step 4: Simplify right side
290,963.30x = 39,847,044,607.43 - Step 5: Solve for x
x = 39,847,044,607.43/290,963.30 - Step 6: Final answer
x = 136,948.70
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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.