Finding the Fourth Proportional to 257,457.11, 386,266.30 and 115,421.49
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Solution
The fourth proportional to 257,457.11, 386,266.30 and 115,421.49 is: 173,168.39
Step by Step Solution
- Step 1: Write the proportion equation
257,457.11 : 386,266.30 = 115,421.49 : x - Step 2: Convert to fraction form
257,457.11/386,266.30 = 115,421.49/x - Step 3: Cross multiply
257,457.11x = 386,266.30 × 115,421.49 - Step 4: Simplify right side
257,457.11x = 44,583,431,594.23 - Step 5: Solve for x
x = 44,583,431,594.23/257,457.11 - Step 6: Final answer
x = 173,168.39
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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.