Finding the Fourth Proportional to 312,124.70, 430,728.90 and 168,881.60
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Solution
The fourth proportional to 312,124.70, 430,728.90 and 168,881.60 is: 233,054.88
Step by Step Solution
- Step 1: Write the proportion equation
312,124.70 : 430,728.90 = 168,881.60 : x - Step 2: Convert to fraction form
312,124.70/430,728.90 = 168,881.60/x - Step 3: Cross multiply
312,124.70x = 430,728.90 × 168,881.60 - Step 4: Simplify right side
312,124.70x = 72,742,185,798.24 - Step 5: Solve for x
x = 72,742,185,798.24/312,124.70 - Step 6: Final answer
x = 233,054.88
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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.