Finding the Fourth Proportional to 321,395.48, 443,518.70 and 178,154.28
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Solution
The fourth proportional to 321,395.48, 443,518.70 and 178,154.28 is: 245,848.99
Step by Step Solution
- Step 1: Write the proportion equation
321,395.48 : 443,518.70 = 178,154.28 : x - Step 2: Convert to fraction form
321,395.48/443,518.70 = 178,154.28/x - Step 3: Cross multiply
321,395.48x = 443,518.70 × 178,154.28 - Step 4: Simplify right side
321,395.48x = 79,014,754,665.04 - Step 5: Solve for x
x = 79,014,754,665.04/321,395.48 - Step 6: Final answer
x = 245,848.99
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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.