Finding the Fourth Proportional to 258,946,916.31, 357,346,887.87 and 139,869,507.97
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Solution
The fourth proportional to 258,946,916.31, 357,346,887.87 and 139,869,507.97 is: 193,019,998.44
Step by Step Solution
- Step 1: Write the proportion equation
258,946,916.31 : 357,346,887.87 = 139,869,507.97 : x - Step 2: Convert to fraction form
258,946,916.31/357,346,887.87 = 139,869,507.97/x - Step 3: Cross multiply
258,946,916.31x = 357,346,887.87 × 139,869,507.97 - Step 4: Simplify right side
258,946,916.31x = 49,981,933,380,987,664 - Step 5: Solve for x
x = 49,981,933,380,987,664/258,946,916.31 - Step 6: Final answer
x = 193,019,998.44
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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.