Finding the Fourth Proportional to 319,627,189.20, 479,440,783.80 and 147,440,305.20
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Solution
The fourth proportional to 319,627,189.20, 479,440,783.80 and 147,440,305.20 is: 221,160,457.80
Step by Step Solution
- Step 1: Write the proportion equation
319,627,189.20 : 479,440,783.80 = 147,440,305.20 : x - Step 2: Convert to fraction form
319,627,189.20/479,440,783.80 = 147,440,305.20/x - Step 3: Cross multiply
319,627,189.20x = 479,440,783.80 × 147,440,305.20 - Step 4: Simplify right side
319,627,189.20x = 70,688,895,488,799,208 - Step 5: Solve for x
x = 70,688,895,488,799,208/319,627,189.20 - Step 6: Final answer
x = 221,160,457.80
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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.