Finding the Fourth Proportional to 312,465.47, 431,202.69 and 169,225.67
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Solution
The fourth proportional to 312,465.47, 431,202.69 and 169,225.67 is: 233,531.62
Step by Step Solution
- Step 1: Write the proportion equation
312,465.47 : 431,202.69 = 169,225.67 : x - Step 2: Convert to fraction form
312,465.47/431,202.69 = 169,225.67/x - Step 3: Cross multiply
312,465.47x = 431,202.69 × 169,225.67 - Step 4: Simplify right side
312,465.47x = 72,970,565,199.06 - Step 5: Solve for x
x = 72,970,565,199.06/312,465.47 - Step 6: Final answer
x = 233,531.62
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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.