Finding the Fourth Proportional to 306,612.67, 423,139.42 and 170,655.31
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Solution
The fourth proportional to 306,612.67, 423,139.42 and 170,655.31 is: 235,512.09
Step by Step Solution
- Step 1: Write the proportion equation
306,612.67 : 423,139.42 = 170,655.31 : x - Step 2: Convert to fraction form
306,612.67/423,139.42 = 170,655.31/x - Step 3: Cross multiply
306,612.67x = 423,139.42 × 170,655.31 - Step 4: Simplify right side
306,612.67x = 72,210,989,993.08 - Step 5: Solve for x
x = 72,210,989,993.08/306,612.67 - Step 6: Final answer
x = 235,512.09
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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.