Finding the Fourth Proportional to 238,639,170.72, 329,135,489.36 and 155,034,238.72
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Solution
The fourth proportional to 238,639,170.72, 329,135,489.36 and 155,034,238.72 is: 213,826,044.88
Step by Step Solution
- Step 1: Write the proportion equation
238,639,170.72 : 329,135,489.36 = 155,034,238.72 : x - Step 2: Convert to fraction form
238,639,170.72/329,135,489.36 = 155,034,238.72/x - Step 3: Cross multiply
238,639,170.72x = 329,135,489.36 × 155,034,238.72 - Step 4: Simplify right side
238,639,170.72x = 51,027,270,028,662,264 - Step 5: Solve for x
x = 51,027,270,028,662,264/238,639,170.72 - Step 6: Final answer
x = 213,826,044.88
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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.