Finding the Fourth Proportional to 315,442.23, 435,317.74 and 172,203.35
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Solution
The fourth proportional to 315,442.23, 435,317.74 and 172,203.35 is: 237,644.70
Step by Step Solution
- Step 1: Write the proportion equation
315,442.23 : 435,317.74 = 172,203.35 : x - Step 2: Convert to fraction form
315,442.23/435,317.74 = 172,203.35/x - Step 3: Cross multiply
315,442.23x = 435,317.74 × 172,203.35 - Step 4: Simplify right side
315,442.23x = 74,963,173,800.22 - Step 5: Solve for x
x = 74,963,173,800.22/315,442.23 - Step 6: Final answer
x = 237,644.70
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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.