Finding the Fourth Proportional to 386,587,896.08, 533,491,383.76 and 212,747,640.08
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Solution
The fourth proportional to 386,587,896.08, 533,491,383.76 and 212,747,640.08 is: 293,591,791.28
Step by Step Solution
- Step 1: Write the proportion equation
386,587,896.08 : 533,491,383.76 = 212,747,640.08 : x - Step 2: Convert to fraction form
386,587,896.08/533,491,383.76 = 212,747,640.08/x - Step 3: Cross multiply
386,587,896.08x = 533,491,383.76 × 212,747,640.08 - Step 4: Simplify right side
386,587,896.08x = 113,499,032,897,953,648 - Step 5: Solve for x
x = 113,499,032,897,953,648/386,587,896.08 - Step 6: Final answer
x = 293,591,791.28
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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.