Finding the Fourth Proportional to 313,138,647.63, 432,079,444.53 and 180,991,971.99
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Solution
The fourth proportional to 313,138,647.63, 432,079,444.53 and 180,991,971.99 is: 249,738,929.75
Step by Step Solution
- Step 1: Write the proportion equation
313,138,647.63 : 432,079,444.53 = 180,991,971.99 : x - Step 2: Convert to fraction form
313,138,647.63/432,079,444.53 = 180,991,971.99/x - Step 3: Cross multiply
313,138,647.63x = 432,079,444.53 × 180,991,971.99 - Step 4: Simplify right side
313,138,647.63x = 78,202,910,721,828,512 - Step 5: Solve for x
x = 78,202,910,721,828,512/313,138,647.63 - Step 6: Final answer
x = 249,738,929.75
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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.