Finding the Fourth Proportional to 290,988.98, 436,501.92 and 91,317.26
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Solution
The fourth proportional to 290,988.98, 436,501.92 and 91,317.26 is: 136,981.68
Step by Step Solution
- Step 1: Write the proportion equation
290,988.98 : 436,501.92 = 91,317.26 : x - Step 2: Convert to fraction form
290,988.98/436,501.92 = 91,317.26/x - Step 3: Cross multiply
290,988.98x = 436,501.92 × 91,317.26 - Step 4: Simplify right side
290,988.98x = 39,860,159,319.14 - Step 5: Solve for x
x = 39,860,159,319.14/290,988.98 - Step 6: Final answer
x = 136,981.68
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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.