Finding the Fourth Proportional to 436,931.28, 655,401.24 and 137,405.16
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Solution
The fourth proportional to 436,931.28, 655,401.24 and 137,405.16 is: 206,109.10
Step by Step Solution
- Step 1: Write the proportion equation
436,931.28 : 655,401.24 = 137,405.16 : x - Step 2: Convert to fraction form
436,931.28/655,401.24 = 137,405.16/x - Step 3: Cross multiply
436,931.28x = 655,401.24 × 137,405.16 - Step 4: Simplify right side
436,931.28x = 90,055,512,246.40 - Step 5: Solve for x
x = 90,055,512,246.40/436,931.28 - Step 6: Final answer
x = 206,109.10
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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.