Finding the Fourth Proportional to 236,415.15, 326,251.80 and 128,984.85
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Solution
The fourth proportional to 236,415.15, 326,251.80 and 128,984.85 is: 177,998.49
Step by Step Solution
- Step 1: Write the proportion equation
236,415.15 : 326,251.80 = 128,984.85 : x - Step 2: Convert to fraction form
236,415.15/326,251.80 = 128,984.85/x - Step 3: Cross multiply
236,415.15x = 326,251.80 × 128,984.85 - Step 4: Simplify right side
236,415.15x = 42,081,539,485.23 - Step 5: Solve for x
x = 42,081,539,485.23/236,415.15 - Step 6: Final answer
x = 177,998.49
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1.5x scale
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.