Finding the Fourth Proportional to 378,239,390.16, 521,947,863.36 and 219,457,212.48
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Solution
The fourth proportional to 378,239,390.16, 521,947,863.36 and 219,457,212.48 is: 302,837,901.43
Step by Step Solution
- Step 1: Write the proportion equation
378,239,390.16 : 521,947,863.36 = 219,457,212.48 : x - Step 2: Convert to fraction form
378,239,390.16/521,947,863.36 = 219,457,212.48/x - Step 3: Cross multiply
378,239,390.16x = 521,947,863.36 × 219,457,212.48 - Step 4: Simplify right side
378,239,390.16x = 114,545,223,152,877,520 - Step 5: Solve for x
x = 114,545,223,152,877,520/378,239,390.16 - Step 6: Final answer
x = 302,837,901.43
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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.