Finding the Fourth Proportional to 257,379.12, 385,543.08 and 132,457.68
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Solution
The fourth proportional to 257,379.12, 385,543.08 and 132,457.68 is: 198,416.03
Step by Step Solution
- Step 1: Write the proportion equation
257,379.12 : 385,543.08 = 132,457.68 : x - Step 2: Convert to fraction form
257,379.12/385,543.08 = 132,457.68/x - Step 3: Cross multiply
257,379.12x = 385,543.08 × 132,457.68 - Step 4: Simplify right side
257,379.12x = 51,068,141,916.85 - Step 5: Solve for x
x = 51,068,141,916.85/257,379.12 - Step 6: Final answer
x = 198,416.03
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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.