Finding the Fourth Proportional to 343,990.79, 474,932.12 and 223,475.55
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Solution
The fourth proportional to 343,990.79, 474,932.12 and 223,475.55 is: 308,542.32
Step by Step Solution
- Step 1: Write the proportion equation
343,990.79 : 474,932.12 = 223,475.55 : x - Step 2: Convert to fraction form
343,990.79/474,932.12 = 223,475.55/x - Step 3: Cross multiply
343,990.79x = 474,932.12 × 223,475.55 - Step 4: Simplify right side
343,990.79x = 106,135,716,729.67 - Step 5: Solve for x
x = 106,135,716,729.67/343,990.79 - Step 6: Final answer
x = 308,542.32
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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.