Finding the Fourth Proportional to 312,756.19, 431,601.11 and 169,512.55
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Solution
The fourth proportional to 312,756.19, 431,601.11 and 169,512.55 is: 233,926.00
Step by Step Solution
- Step 1: Write the proportion equation
312,756.19 : 431,601.11 = 169,512.55 : x - Step 2: Convert to fraction form
312,756.19/431,601.11 = 169,512.55/x - Step 3: Cross multiply
312,756.19x = 431,601.11 × 169,512.55 - Step 4: Simplify right side
312,756.19x = 73,161,803,448.04 - Step 5: Solve for x
x = 73,161,803,448.04/312,756.19 - Step 6: Final answer
x = 233,926.00
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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.