Finding the Fourth Proportional to 312,467.97, 431,206.14 and 169,228.18
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Solution
The fourth proportional to 312,467.97, 431,206.14 and 169,228.18 is: 233,535.07
Step by Step Solution
- Step 1: Write the proportion equation
312,467.97 : 431,206.14 = 169,228.18 : x - Step 2: Convert to fraction form
312,467.97/431,206.14 = 169,228.18/x - Step 3: Cross multiply
312,467.97x = 431,206.14 × 169,228.18 - Step 4: Simplify right side
312,467.97x = 72,972,230,277.03 - Step 5: Solve for x
x = 72,972,230,277.03/312,467.97 - Step 6: Final answer
x = 233,535.07
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1.5x scale
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.