Finding the Fourth Proportional to 275,615.44, 380,368.05 and 153,121.84
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Solution
The fourth proportional to 275,615.44, 380,368.05 and 153,121.84 is: 211,318.55
Step by Step Solution
- Step 1: Write the proportion equation
275,615.44 : 380,368.05 = 153,121.84 : x - Step 2: Convert to fraction form
275,615.44/380,368.05 = 153,121.84/x - Step 3: Cross multiply
275,615.44x = 380,368.05 × 153,121.84 - Step 4: Simplify right side
275,615.44x = 58,242,655,693.21 - Step 5: Solve for x
x = 58,242,655,693.21/275,615.44 - Step 6: Final answer
x = 211,318.55
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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.