Finding the Fourth Proportional to 403,391.25, 556,832.21 and 317,125.17
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Solution
The fourth proportional to 403,391.25, 556,832.21 and 317,125.17 is: 437,752.45
Step by Step Solution
- Step 1: Write the proportion equation
403,391.25 : 556,832.21 = 317,125.17 : x - Step 2: Convert to fraction form
403,391.25/556,832.21 = 317,125.17/x - Step 3: Cross multiply
403,391.25x = 556,832.21 × 317,125.17 - Step 4: Simplify right side
403,391.25x = 176,585,507,672.10 - Step 5: Solve for x
x = 176,585,507,672.10/403,391.25 - Step 6: Final answer
x = 437,752.45
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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.