Finding the Fourth Proportional to 394,980.02, 592,356.90 and 128,763.80
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Solution
The fourth proportional to 394,980.02, 592,356.90 and 128,763.80 is: 193,108.82
Step by Step Solution
- Step 1: Write the proportion equation
394,980.02 : 592,356.90 = 128,763.80 : x - Step 2: Convert to fraction form
394,980.02/592,356.90 = 128,763.80/x - Step 3: Cross multiply
394,980.02x = 592,356.90 × 128,763.80 - Step 4: Simplify right side
394,980.02x = 76,274,125,400.22 - Step 5: Solve for x
x = 76,274,125,400.22/394,980.02 - Step 6: Final answer
x = 193,108.82
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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.