Finding the Fourth Proportional to 291,303.12, 436,978.26 and 80,941.08
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Solution
The fourth proportional to 291,303.12, 436,978.26 and 80,941.08 is: 121,418.17
Step by Step Solution
- Step 1: Write the proportion equation
291,303.12 : 436,978.26 = 80,941.08 : x - Step 2: Convert to fraction form
291,303.12/436,978.26 = 80,941.08/x - Step 3: Cross multiply
291,303.12x = 436,978.26 × 80,941.08 - Step 4: Simplify right side
291,303.12x = 35,369,492,300.92 - Step 5: Solve for x
x = 35,369,492,300.92/291,303.12 - Step 6: Final answer
x = 121,418.17
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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.