Finding the Fourth Proportional to 256,920.24, 385,438.92 and 138,588.96
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Solution
The fourth proportional to 256,920.24, 385,438.92 and 138,588.96 is: 207,915.03
Step by Step Solution
- Step 1: Write the proportion equation
256,920.24 : 385,438.92 = 138,588.96 : x - Step 2: Convert to fraction form
256,920.24/385,438.92 = 138,588.96/x - Step 3: Cross multiply
256,920.24x = 385,438.92 × 138,588.96 - Step 4: Simplify right side
256,920.24x = 53,417,579,066.32 - Step 5: Solve for x
x = 53,417,579,066.32/256,920.24 - Step 6: Final answer
x = 207,915.03
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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.