Finding the Fourth Proportional to 312,437.10, 431,163.60 and 169,197.36
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Solution
The fourth proportional to 312,437.10, 431,163.60 and 169,197.36 is: 233,492.57
Step by Step Solution
- Step 1: Write the proportion equation
312,437.10 : 431,163.60 = 169,197.36 : x - Step 2: Convert to fraction form
312,437.10/431,163.60 = 169,197.36/x - Step 3: Cross multiply
312,437.10x = 431,163.60 × 169,197.36 - Step 4: Simplify right side
312,437.10x = 72,951,742,848.10 - Step 5: Solve for x
x = 72,951,742,848.10/312,437.10 - Step 6: Final answer
x = 233,492.57
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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.