Finding the Fourth Proportional to 328,407.36, 492,464.16 and 138,828.48
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Solution
The fourth proportional to 328,407.36, 492,464.16 and 138,828.48 is: 208,180.63
Step by Step Solution
- Step 1: Write the proportion equation
328,407.36 : 492,464.16 = 138,828.48 : x - Step 2: Convert to fraction form
328,407.36/492,464.16 = 138,828.48/x - Step 3: Cross multiply
328,407.36x = 492,464.16 × 138,828.48 - Step 4: Simplify right side
328,407.36x = 68,368,050,787.28 - Step 5: Solve for x
x = 68,368,050,787.28/328,407.36 - Step 6: Final answer
x = 208,180.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.