Finding the Fourth Proportional to 317,881.81, 438,791.99 and 210,486.43
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Solution
The fourth proportional to 317,881.81, 438,791.99 and 210,486.43 is: 290,547.48
Step by Step Solution
- Step 1: Write the proportion equation
317,881.81 : 438,791.99 = 210,486.43 : x - Step 2: Convert to fraction form
317,881.81/438,791.99 = 210,486.43/x - Step 3: Cross multiply
317,881.81x = 438,791.99 × 210,486.43 - Step 4: Simplify right side
317,881.81x = 92,359,759,487.70 - Step 5: Solve for x
x = 92,359,759,487.70/317,881.81 - Step 6: Final answer
x = 290,547.48
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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.