Finding the Fourth Proportional to 306,411,998.72, 422,354,595.20 and 207,256,584.96
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Solution
The fourth proportional to 306,411,998.72, 422,354,595.20 and 207,256,584.96 is: 285,679,971.44
Step by Step Solution
- Step 1: Write the proportion equation
306,411,998.72 : 422,354,595.20 = 207,256,584.96 : x - Step 2: Convert to fraction form
306,411,998.72/422,354,595.20 = 207,256,584.96/x - Step 3: Cross multiply
306,411,998.72x = 422,354,595.20 × 207,256,584.96 - Step 4: Simplify right side
306,411,998.72x = 87,535,771,043,315,216 - Step 5: Solve for x
x = 87,535,771,043,315,216/306,411,998.72 - Step 6: Final answer
x = 285,679,971.44
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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.