Finding the Fourth Proportional to 299,563,315.20, 449,344,972.80 and 172,161,331.20
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Solution
The fourth proportional to 299,563,315.20, 449,344,972.80 and 172,161,331.20 is: 258,241,996.80
Step by Step Solution
- Step 1: Write the proportion equation
299,563,315.20 : 449,344,972.80 = 172,161,331.20 : x - Step 2: Convert to fraction form
299,563,315.20/449,344,972.80 = 172,161,331.20/x - Step 3: Cross multiply
299,563,315.20x = 449,344,972.80 × 172,161,331.20 - Step 4: Simplify right side
299,563,315.20x = 77,359,828,685,275,792 - Step 5: Solve for x
x = 77,359,828,685,275,792/299,563,315.20 - Step 6: Final answer
x = 258,241,996.80
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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.