Finding the Fourth Proportional to 311,860.80, 430,368.32 and 168,622.08
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Solution
The fourth proportional to 311,860.80, 430,368.32 and 168,622.08 is: 232,698.70
Step by Step Solution
- Step 1: Write the proportion equation
311,860.80 : 430,368.32 = 168,622.08 : x - Step 2: Convert to fraction form
311,860.80/430,368.32 = 168,622.08/x - Step 3: Cross multiply
311,860.80x = 430,368.32 × 168,622.08 - Step 4: Simplify right side
311,860.80x = 72,569,601,284.51 - Step 5: Solve for x
x = 72,569,601,284.51/311,860.80 - Step 6: Final answer
x = 232,698.70
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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.