Finding the Fourth Proportional to 311,809.14, 430,309.18 and 174,000.12
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Solution
The fourth proportional to 311,809.14, 430,309.18 and 174,000.12 is: 240,127.18
Step by Step Solution
- Step 1: Write the proportion equation
311,809.14 : 430,309.18 = 174,000.12 : x - Step 2: Convert to fraction form
311,809.14/430,309.18 = 174,000.12/x - Step 3: Cross multiply
311,809.14x = 430,309.18 × 174,000.12 - Step 4: Simplify right side
311,809.14x = 74,873,848,957.10 - Step 5: Solve for x
x = 74,873,848,957.10/311,809.14 - Step 6: Final answer
x = 240,127.18
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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.