Finding the Fourth Proportional to 315,000.91, 434,691.75 and 171,763.75
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Solution
The fourth proportional to 315,000.91, 434,691.75 and 171,763.75 is: 237,028.79
Step by Step Solution
- Step 1: Write the proportion equation
315,000.91 : 434,691.75 = 171,763.75 : x - Step 2: Convert to fraction form
315,000.91/434,691.75 = 171,763.75/x - Step 3: Cross multiply
315,000.91x = 434,691.75 × 171,763.75 - Step 4: Simplify right side
315,000.91x = 74,664,285,074.06 - Step 5: Solve for x
x = 74,664,285,074.06/315,000.91 - Step 6: Final answer
x = 237,028.79
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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.