Finding the Fourth Proportional to 312,466.68, 431,205.12 and 169,226.28
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Solution
The fourth proportional to 312,466.68, 431,205.12 and 169,226.28 is: 233,532.86
Step by Step Solution
- Step 1: Write the proportion equation
312,466.68 : 431,205.12 = 169,226.28 : x - Step 2: Convert to fraction form
312,466.68/431,205.12 = 169,226.28/x - Step 3: Cross multiply
312,466.68x = 431,205.12 × 169,226.28 - Step 4: Simplify right side
312,466.68x = 72,971,238,374.55 - Step 5: Solve for x
x = 72,971,238,374.55/312,466.68 - Step 6: Final answer
x = 233,532.86
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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.