Finding the Fourth Proportional to 389,147,819.49, 537,036,037.61 and 212,943,241.53
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Solution
The fourth proportional to 389,147,819.49, 537,036,037.61 and 212,943,241.53 is: 293,868,265.32
Step by Step Solution
- Step 1: Write the proportion equation
389,147,819.49 : 537,036,037.61 = 212,943,241.53 : x - Step 2: Convert to fraction form
389,147,819.49/537,036,037.61 = 212,943,241.53/x - Step 3: Cross multiply
389,147,819.49x = 537,036,037.61 × 212,943,241.53 - Step 4: Simplify right side
389,147,819.49x = 114,358,194,666,035,680 - Step 5: Solve for x
x = 114,358,194,666,035,680/389,147,819.49 - Step 6: Final answer
x = 293,868,265.32
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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.