Finding the Fourth Proportional to 312,641.75, 431,445.99 and 169,401.68
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Solution
The fourth proportional to 312,641.75, 431,445.99 and 169,401.68 is: 233,774.52
Step by Step Solution
- Step 1: Write the proportion equation
312,641.75 : 431,445.99 = 169,401.68 : x - Step 2: Convert to fraction form
312,641.75/431,445.99 = 169,401.68/x - Step 3: Cross multiply
312,641.75x = 431,445.99 × 169,401.68 - Step 4: Simplify right side
312,641.75x = 73,087,673,378.03 - Step 5: Solve for x
x = 73,087,673,378.03/312,641.75 - Step 6: Final answer
x = 233,774.52
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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.