Finding the Fourth Proportional to 639,250.81, 959,032.28 and 212,785.81
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Solution
The fourth proportional to 639,250.81, 959,032.28 and 212,785.81 is: 319,230.66
Step by Step Solution
- Step 1: Write the proportion equation
639,250.81 : 959,032.28 = 212,785.81 : x - Step 2: Convert to fraction form
639,250.81/959,032.28 = 212,785.81/x - Step 3: Cross multiply
639,250.81x = 959,032.28 × 212,785.81 - Step 4: Simplify right side
639,250.81x = 204,068,460,515.95 - Step 5: Solve for x
x = 204,068,460,515.95/639,250.81 - Step 6: Final answer
x = 319,230.66
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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.