Finding the Fourth Proportional to 313,539,958.05, 432,686,824.46 and 172,420,278.36
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Solution
The fourth proportional to 313,539,958.05, 432,686,824.46 and 172,420,278.36 is: 237,940,909.29
Step by Step Solution
- Step 1: Write the proportion equation
313,539,958.05 : 432,686,824.46 = 172,420,278.36 : x - Step 2: Convert to fraction form
313,539,958.05/432,686,824.46 = 172,420,278.36/x - Step 3: Cross multiply
313,539,958.05x = 432,686,824.46 × 172,420,278.36 - Step 4: Simplify right side
313,539,958.05x = 74,603,982,716,097,664 - Step 5: Solve for x
x = 74,603,982,716,097,664/313,539,958.05 - Step 6: Final answer
x = 237,940,909.29
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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.