Finding the Fourth Proportional to 225,590,107.61, 311,416,355.21 and 142,080,966.96
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Solution
The fourth proportional to 225,590,107.61, 311,416,355.21 and 142,080,966.96 is: 196,135,980.18
Step by Step Solution
- Step 1: Write the proportion equation
225,590,107.61 : 311,416,355.21 = 142,080,966.96 : x - Step 2: Convert to fraction form
225,590,107.61/311,416,355.21 = 142,080,966.96/x - Step 3: Cross multiply
225,590,107.61x = 311,416,355.21 × 142,080,966.96 - Step 4: Simplify right side
225,590,107.61x = 44,246,336,874,685,232 - Step 5: Solve for x
x = 44,246,336,874,685,232/225,590,107.61 - Step 6: Final answer
x = 196,135,980.18
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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.