Finding the Fourth Proportional to 317,159.12, 438,223.56 and 305,806.16
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Solution
The fourth proportional to 317,159.12, 438,223.56 and 305,806.16 is: 422,537.00
Step by Step Solution
- Step 1: Write the proportion equation
317,159.12 : 438,223.56 = 305,806.16 : x - Step 2: Convert to fraction form
317,159.12/438,223.56 = 305,806.16/x - Step 3: Cross multiply
317,159.12x = 438,223.56 × 305,806.16 - Step 4: Simplify right side
317,159.12x = 134,011,464,105.13 - Step 5: Solve for x
x = 134,011,464,105.13/317,159.12 - Step 6: Final answer
x = 422,537.00
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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.