Finding the Fourth Proportional to 487,634.84, 731,742.96 and 217,742.12
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Solution
The fourth proportional to 487,634.84, 731,742.96 and 217,742.12 is: 326,742.99
Step by Step Solution
- Step 1: Write the proportion equation
487,634.84 : 731,742.96 = 217,742.12 : x - Step 2: Convert to fraction form
487,634.84/731,742.96 = 217,742.12/x - Step 3: Cross multiply
487,634.84x = 731,742.96 × 217,742.12 - Step 4: Simplify right side
487,634.84x = 159,331,263,405.48 - Step 5: Solve for x
x = 159,331,263,405.48/487,634.84 - Step 6: Final answer
x = 326,742.99
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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.