Finding the Fourth Proportional to 257,230.51, 385,902.15 and 86,446.09
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Solution
The fourth proportional to 257,230.51, 385,902.15 and 86,446.09 is: 129,688.08
Step by Step Solution
- Step 1: Write the proportion equation
257,230.51 : 385,902.15 = 86,446.09 : x - Step 2: Convert to fraction form
257,230.51/385,902.15 = 86,446.09/x - Step 3: Cross multiply
257,230.51x = 385,902.15 × 86,446.09 - Step 4: Simplify right side
257,230.51x = 33,359,731,990.09 - Step 5: Solve for x
x = 33,359,731,990.09/257,230.51 - Step 6: Final answer
x = 129,688.08
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1.5x scale
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.