Finding the Fourth Proportional to 289,497.91, 399,495.43 and 160,438.26
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Solution
The fourth proportional to 289,497.91, 399,495.43 and 160,438.26 is: 221,398.32
Step by Step Solution
- Step 1: Write the proportion equation
289,497.91 : 399,495.43 = 160,438.26 : x - Step 2: Convert to fraction form
289,497.91/399,495.43 = 160,438.26/x - Step 3: Cross multiply
289,497.91x = 399,495.43 × 160,438.26 - Step 4: Simplify right side
289,497.91x = 64,094,351,667.15 - Step 5: Solve for x
x = 64,094,351,667.15/289,497.91 - Step 6: Final answer
x = 221,398.32
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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.