Finding the Fourth Proportional to 421,678.68, 581,921.92 and 230,695.26
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Solution
The fourth proportional to 421,678.68, 581,921.92 and 230,695.26 is: 318,362.38
Step by Step Solution
- Step 1: Write the proportion equation
421,678.68 : 581,921.92 = 230,695.26 : x - Step 2: Convert to fraction form
421,678.68/581,921.92 = 230,695.26/x - Step 3: Cross multiply
421,678.68x = 581,921.92 × 230,695.26 - Step 4: Simplify right side
421,678.68x = 134,246,628,634.10 - Step 5: Solve for x
x = 134,246,628,634.10/421,678.68 - Step 6: Final answer
x = 318,362.38
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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.