Finding the Fourth Proportional to 396,319.32, 546,920.69 and 226,557.09
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Solution
The fourth proportional to 396,319.32, 546,920.69 and 226,557.09 is: 312,648.80
Step by Step Solution
- Step 1: Write the proportion equation
396,319.32 : 546,920.69 = 226,557.09 : x - Step 2: Convert to fraction form
396,319.32/546,920.69 = 226,557.09/x - Step 3: Cross multiply
396,319.32x = 546,920.69 × 226,557.09 - Step 4: Simplify right side
396,319.32x = 123,908,758,854.41 - Step 5: Solve for x
x = 123,908,758,854.41/396,319.32 - Step 6: Final answer
x = 312,648.80
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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.