Finding the Fourth Proportional to 228,400.80, 315,182.88 and 126,430.08
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Solution
The fourth proportional to 228,400.80, 315,182.88 and 126,430.08 is: 174,467.85
Step by Step Solution
- Step 1: Write the proportion equation
228,400.80 : 315,182.88 = 126,430.08 : x - Step 2: Convert to fraction form
228,400.80/315,182.88 = 126,430.08/x - Step 3: Cross multiply
228,400.80x = 315,182.88 × 126,430.08 - Step 4: Simplify right side
228,400.80x = 39,848,596,733.03 - Step 5: Solve for x
x = 39,848,596,733.03/228,400.80 - Step 6: Final answer
x = 174,467.85
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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.