Finding the Fourth Proportional to 207,330,900.31, 310,997,513.06 and 69,156,128.09
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Solution
The fourth proportional to 207,330,900.31, 310,997,513.06 and 69,156,128.09 is: 103,734,579.92
Step by Step Solution
- Step 1: Write the proportion equation
207,330,900.31 : 310,997,513.06 = 69,156,128.09 : x - Step 2: Convert to fraction form
207,330,900.31/310,997,513.06 = 69,156,128.09/x - Step 3: Cross multiply
207,330,900.31x = 310,997,513.06 × 69,156,128.09 - Step 4: Simplify right side
207,330,900.31x = 21,507,383,847,502,204 - Step 5: Solve for x
x = 21,507,383,847,502,204/207,330,900.31 - Step 6: Final answer
x = 103,734,579.92
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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.