Finding the Fourth Proportional to 311,507.19, 429,879.63 and 168,267.18
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Solution
The fourth proportional to 311,507.19, 429,879.63 and 168,267.18 is: 232,208.55
Step by Step Solution
- Step 1: Write the proportion equation
311,507.19 : 429,879.63 = 168,267.18 : x - Step 2: Convert to fraction form
311,507.19/429,879.63 = 168,267.18/x - Step 3: Cross multiply
311,507.19x = 429,879.63 × 168,267.18 - Step 4: Simplify right side
311,507.19x = 72,334,633,079.54 - Step 5: Solve for x
x = 72,334,633,079.54/311,507.19 - Step 6: Final answer
x = 232,208.55
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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.