Finding the Fourth Proportional to 378,624,693.40, 567,545,129.70 and 205,736,219.80
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Solution
The fourth proportional to 378,624,693.40, 567,545,129.70 and 205,736,219.80 is: 308,391,374.32
Step by Step Solution
- Step 1: Write the proportion equation
378,624,693.40 : 567,545,129.70 = 205,736,219.80 : x - Step 2: Convert to fraction form
378,624,693.40/567,545,129.70 = 205,736,219.80/x - Step 3: Cross multiply
378,624,693.40x = 567,545,129.70 × 205,736,219.80 - Step 4: Simplify right side
378,624,693.40x = 116,764,589,550,378,720 - Step 5: Solve for x
x = 116,764,589,550,378,720/378,624,693.40 - Step 6: Final answer
x = 308,391,374.32
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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.