Finding the Fourth Proportional to 215,832,138.30, 323,748,207.45 and 193,157,322.30
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Solution
The fourth proportional to 215,832,138.30, 323,748,207.45 and 193,157,322.30 is: 289,735,983.45
Step by Step Solution
- Step 1: Write the proportion equation
215,832,138.30 : 323,748,207.45 = 193,157,322.30 : x - Step 2: Convert to fraction form
215,832,138.30/323,748,207.45 = 193,157,322.30/x - Step 3: Cross multiply
215,832,138.30x = 323,748,207.45 × 193,157,322.30 - Step 4: Simplify right side
215,832,138.30x = 62,534,336,850,466,912 - Step 5: Solve for x
x = 62,534,336,850,466,912/215,832,138.30 - Step 6: Final answer
x = 289,735,983.45
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1.5x scale
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.