Finding the Fourth Proportional to 420,540.86, 580,326.12 and 239,235.73
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Solution
The fourth proportional to 420,540.86, 580,326.12 and 239,235.73 is: 330,133.77
Step by Step Solution
- Step 1: Write the proportion equation
420,540.86 : 580,326.12 = 239,235.73 : x - Step 2: Convert to fraction form
420,540.86/580,326.12 = 239,235.73/x - Step 3: Cross multiply
420,540.86x = 580,326.12 × 239,235.73 - Step 4: Simplify right side
420,540.86x = 138,834,741,505.45 - Step 5: Solve for x
x = 138,834,741,505.45/420,540.86 - Step 6: Final answer
x = 330,133.77
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1.5x scale
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.