Finding the Fourth Proportional to 215,438,778.64, 323,636,464.92 and 133,618,122.40
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Solution
The fourth proportional to 215,438,778.64, 323,636,464.92 and 133,618,122.40 is: 200,723,830.02
Step by Step Solution
- Step 1: Write the proportion equation
215,438,778.64 : 323,636,464.92 = 133,618,122.40 : x - Step 2: Convert to fraction form
215,438,778.64/323,636,464.92 = 133,618,122.40/x - Step 3: Cross multiply
215,438,778.64x = 323,636,464.92 × 133,618,122.40 - Step 4: Simplify right side
215,438,778.64x = 43,243,696,782,783,872 - Step 5: Solve for x
x = 43,243,696,782,783,872/215,438,778.64 - Step 6: Final answer
x = 200,723,830.02
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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.