Finding the Fourth Proportional to 230,887.47, 318,621.69 and 128,914.67
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Solution
The fourth proportional to 230,887.47, 318,621.69 and 128,914.67 is: 177,900.56
Step by Step Solution
- Step 1: Write the proportion equation
230,887.47 : 318,621.69 = 128,914.67 : x - Step 2: Convert to fraction form
230,887.47/318,621.69 = 128,914.67/x - Step 3: Cross multiply
230,887.47x = 318,621.69 × 128,914.67 - Step 4: Simplify right side
230,887.47x = 41,075,010,021.19 - Step 5: Solve for x
x = 41,075,010,021.19/230,887.47 - Step 6: Final answer
x = 177,900.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.