Finding the Fourth Proportional to 393,951,459.84, 543,663,267.92 and 217,742,236.80
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Solution
The fourth proportional to 393,951,459.84, 543,663,267.92 and 217,742,236.80 is: 300,489,953.94
Step by Step Solution
- Step 1: Write the proportion equation
393,951,459.84 : 543,663,267.92 = 217,742,236.80 : x - Step 2: Convert to fraction form
393,951,459.84/543,663,267.92 = 217,742,236.80/x - Step 3: Cross multiply
393,951,459.84x = 543,663,267.92 × 217,742,236.80 - Step 4: Simplify right side
393,951,459.84x = 118,378,456,022,898,480 - Step 5: Solve for x
x = 118,378,456,022,898,480/393,951,459.84 - Step 6: Final answer
x = 300,489,953.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.