Finding the Fourth Proportional to 275,893.75, 413,840.63 and 78,901.75
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Solution
The fourth proportional to 275,893.75, 413,840.63 and 78,901.75 is: 118,352.63
Step by Step Solution
- Step 1: Write the proportion equation
275,893.75 : 413,840.63 = 78,901.75 : x - Step 2: Convert to fraction form
275,893.75/413,840.63 = 78,901.75/x - Step 3: Cross multiply
275,893.75x = 413,840.63 × 78,901.75 - Step 4: Simplify right side
275,893.75x = 32,652,749,928.10 - Step 5: Solve for x
x = 32,652,749,928.10/275,893.75 - Step 6: Final answer
x = 118,352.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.