Finding the Fourth Proportional to 392,785.50, 542,043.99 and 213,937.50
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Solution
The fourth proportional to 392,785.50, 542,043.99 and 213,937.50 is: 295,233.75
Step by Step Solution
- Step 1: Write the proportion equation
392,785.50 : 542,043.99 = 213,937.50 : x - Step 2: Convert to fraction form
392,785.50/542,043.99 = 213,937.50/x - Step 3: Cross multiply
392,785.50x = 542,043.99 × 213,937.50 - Step 4: Simplify right side
392,785.50x = 115,963,536,110.63 - Step 5: Solve for x
x = 115,963,536,110.63/392,785.50 - Step 6: Final answer
x = 295,233.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.