Finding the Fourth Proportional to 420,934.06, 580,889.53 and 239,645.99
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Solution
The fourth proportional to 420,934.06, 580,889.53 and 239,645.99 is: 330,711.77
Step by Step Solution
- Step 1: Write the proportion equation
420,934.06 : 580,889.53 = 239,645.99 : x - Step 2: Convert to fraction form
420,934.06/580,889.53 = 239,645.99/x - Step 3: Cross multiply
420,934.06x = 580,889.53 × 239,645.99 - Step 4: Simplify right side
420,934.06x = 139,207,846,497.49 - Step 5: Solve for x
x = 139,207,846,497.49/420,934.06 - Step 6: Final answer
x = 330,711.77
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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.