Finding the Fourth Proportional to 315,460.54, 435,342.12 and 172,226.62
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Solution
The fourth proportional to 315,460.54, 435,342.12 and 172,226.62 is: 237,676.33
Step by Step Solution
- Step 1: Write the proportion equation
315,460.54 : 435,342.12 = 172,226.62 : x - Step 2: Convert to fraction form
315,460.54/435,342.12 = 172,226.62/x - Step 3: Cross multiply
315,460.54x = 435,342.12 × 172,226.62 - Step 4: Simplify right side
315,460.54x = 74,977,501,871.23 - Step 5: Solve for x
x = 74,977,501,871.23/315,460.54 - Step 6: Final answer
x = 237,676.33
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1.5x scale
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.