Finding the Fourth Proportional to 315,822.72, 435,816.99 and 172,583.94
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Solution
The fourth proportional to 315,822.72, 435,816.99 and 172,583.94 is: 238,155.80
Step by Step Solution
- Step 1: Write the proportion equation
315,822.72 : 435,816.99 = 172,583.94 : x - Step 2: Convert to fraction form
315,822.72/435,816.99 = 172,583.94/x - Step 3: Cross multiply
315,822.72x = 435,816.99 × 172,583.94 - Step 4: Simplify right side
315,822.72x = 75,215,013,253.14 - Step 5: Solve for x
x = 75,215,013,253.14/315,822.72 - Step 6: Final answer
x = 238,155.80
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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.