Finding the Fourth Proportional to 311,911,719.12, 430,438,276.53 and 170,791,864.92
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Solution
The fourth proportional to 311,911,719.12, 430,438,276.53 and 170,791,864.92 is: 235,692,830.62
Step by Step Solution
- Step 1: Write the proportion equation
311,911,719.12 : 430,438,276.53 = 170,791,864.92 : x - Step 2: Convert to fraction form
311,911,719.12/430,438,276.53 = 170,791,864.92/x - Step 3: Cross multiply
311,911,719.12x = 430,438,276.53 × 170,791,864.92 - Step 4: Simplify right side
311,911,719.12x = 73,515,355,981,509,360 - Step 5: Solve for x
x = 73,515,355,981,509,360/311,911,719.12 - Step 6: Final answer
x = 235,692,830.62
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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.