Finding the Fourth Proportional to 420,743.40, 631,419.57 and 164,613.84
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Solution
The fourth proportional to 420,743.40, 631,419.57 and 164,613.84 is: 247,039.88
Step by Step Solution
- Step 1: Write the proportion equation
420,743.40 : 631,419.57 = 164,613.84 : x - Step 2: Convert to fraction form
420,743.40/631,419.57 = 164,613.84/x - Step 3: Cross multiply
420,743.40x = 631,419.57 × 164,613.84 - Step 4: Simplify right side
420,743.40x = 103,940,400,068.85 - Step 5: Solve for x
x = 103,940,400,068.85/420,743.40 - Step 6: Final answer
x = 247,039.88
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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.