Finding the Fourth Proportional to 221,442.75, 305,607.42 and 125,980.20
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Solution
The fourth proportional to 221,442.75, 305,607.42 and 125,980.20 is: 173,862.02
Step by Step Solution
- Step 1: Write the proportion equation
221,442.75 : 305,607.42 = 125,980.20 : x - Step 2: Convert to fraction form
221,442.75/305,607.42 = 125,980.20/x - Step 3: Cross multiply
221,442.75x = 305,607.42 × 125,980.20 - Step 4: Simplify right side
221,442.75x = 38,500,483,893.08 - Step 5: Solve for x
x = 38,500,483,893.08/221,442.75 - Step 6: Final answer
x = 173,862.02
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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.