Finding the Fourth Proportional to 395,209.82, 592,909.04 and 128,970.81
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Solution
The fourth proportional to 395,209.82, 592,909.04 and 128,970.81 is: 193,486.99
Step by Step Solution
- Step 1: Write the proportion equation
395,209.82 : 592,909.04 = 128,970.81 : x - Step 2: Convert to fraction form
395,209.82/592,909.04 = 128,970.81/x - Step 3: Cross multiply
395,209.82x = 592,909.04 × 128,970.81 - Step 4: Simplify right side
395,209.82x = 76,467,958,500.27 - Step 5: Solve for x
x = 76,467,958,500.27/395,209.82 - Step 6: Final answer
x = 193,486.99
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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.