Finding the Fourth Proportional to 212,458.86, 318,688.34 and 70,265.99
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Solution
The fourth proportional to 212,458.86, 318,688.34 and 70,265.99 is: 105,398.99
Step by Step Solution
- Step 1: Write the proportion equation
212,458.86 : 318,688.34 = 70,265.99 : x - Step 2: Convert to fraction form
212,458.86/318,688.34 = 70,265.99/x - Step 3: Cross multiply
212,458.86x = 318,688.34 × 70,265.99 - Step 4: Simplify right side
212,458.86x = 22,392,949,766.79 - Step 5: Solve for x
x = 22,392,949,766.79/212,458.86 - Step 6: Final answer
x = 105,398.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.