Finding the Fourth Proportional to 324,812.10, 487,218.15 and 212,837.70
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Solution
The fourth proportional to 324,812.10, 487,218.15 and 212,837.70 is: 319,256.55
Step by Step Solution
- Step 1: Write the proportion equation
324,812.10 : 487,218.15 = 212,837.70 : x - Step 2: Convert to fraction form
324,812.10/487,218.15 = 212,837.70/x - Step 3: Cross multiply
324,812.10x = 487,218.15 × 212,837.70 - Step 4: Simplify right side
324,812.10x = 103,698,390,444.26 - Step 5: Solve for x
x = 103,698,390,444.26/324,812.10 - Step 6: Final answer
x = 319,256.55
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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.