Finding the Fourth Proportional to 317,658.08, 438,368.81 and 172,464.03
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Solution
The fourth proportional to 317,658.08, 438,368.81 and 172,464.03 is: 238,000.72
Step by Step Solution
- Step 1: Write the proportion equation
317,658.08 : 438,368.81 = 172,464.03 : x - Step 2: Convert to fraction form
317,658.08/438,368.81 = 172,464.03/x - Step 3: Cross multiply
317,658.08x = 438,368.81 × 172,464.03 - Step 4: Simplify right side
317,658.08x = 75,602,850,736.58 - Step 5: Solve for x
x = 75,602,850,736.58/317,658.08 - Step 6: Final answer
x = 238,000.72
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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.