Finding the Fourth Proportional to 420,231.18, 579,946.44 and 238,959.96
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Solution
The fourth proportional to 420,231.18, 579,946.44 and 238,959.96 is: 329,780.33
Step by Step Solution
- Step 1: Write the proportion equation
420,231.18 : 579,946.44 = 238,959.96 : x - Step 2: Convert to fraction form
420,231.18/579,946.44 = 238,959.96/x - Step 3: Cross multiply
420,231.18x = 579,946.44 × 238,959.96 - Step 4: Simplify right side
420,231.18x = 138,583,978,104.54 - Step 5: Solve for x
x = 138,583,978,104.54/420,231.18 - Step 6: Final answer
x = 329,780.33
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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.