Finding the Fourth Proportional to 391,212,366.84, 539,886,013.02 and 215,006,606.28
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Solution
The fourth proportional to 391,212,366.84, 539,886,013.02 and 215,006,606.28 is: 296,716,232.09
Step by Step Solution
- Step 1: Write the proportion equation
391,212,366.84 : 539,886,013.02 = 215,006,606.28 : x - Step 2: Convert to fraction form
391,212,366.84/539,886,013.02 = 215,006,606.28/x - Step 3: Cross multiply
391,212,366.84x = 539,886,013.02 × 215,006,606.28 - Step 4: Simplify right side
391,212,366.84x = 116,079,059,437,470,096 - Step 5: Solve for x
x = 116,079,059,437,470,096/391,212,366.84 - Step 6: Final answer
x = 296,716,232.09
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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.