Finding the Fourth Proportional to 420,913.92, 580,873.95 and 229,939.62
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Solution
The fourth proportional to 420,913.92, 580,873.95 and 229,939.62 is: 317,323.64
Step by Step Solution
- Step 1: Write the proportion equation
420,913.92 : 580,873.95 = 229,939.62 : x - Step 2: Convert to fraction form
420,913.92/580,873.95 = 229,939.62/x - Step 3: Cross multiply
420,913.92x = 580,873.95 × 229,939.62 - Step 4: Simplify right side
420,913.92x = 133,565,935,330.90 - Step 5: Solve for x
x = 133,565,935,330.90/420,913.92 - Step 6: Final answer
x = 317,323.64
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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.