Finding the Fourth Proportional to 313,138.71, 432,134.19 and 169,901.60
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Solution
The fourth proportional to 313,138.71, 432,134.19 and 169,901.60 is: 234,465.70
Step by Step Solution
- Step 1: Write the proportion equation
313,138.71 : 432,134.19 = 169,901.60 : x - Step 2: Convert to fraction form
313,138.71/432,134.19 = 169,901.60/x - Step 3: Cross multiply
313,138.71x = 432,134.19 × 169,901.60 - Step 4: Simplify right side
313,138.71x = 73,420,288,135.03 - Step 5: Solve for x
x = 73,420,288,135.03/313,138.71 - Step 6: Final answer
x = 234,465.70
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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.