Finding the Fourth Proportional to 396,338,486.40, 546,943,877.28 and 217,725,364.80
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Solution
The fourth proportional to 396,338,486.40, 546,943,877.28 and 217,725,364.80 is: 300,459,226.88
Step by Step Solution
- Step 1: Write the proportion equation
396,338,486.40 : 546,943,877.28 = 217,725,364.80 : x - Step 2: Convert to fraction form
396,338,486.40/546,943,877.28 = 217,725,364.80/x - Step 3: Cross multiply
396,338,486.40x = 546,943,877.28 × 217,725,364.80 - Step 4: Simplify right side
396,338,486.40x = 119,083,555,205,914,432 - Step 5: Solve for x
x = 119,083,555,205,914,432/396,338,486.40 - Step 6: Final answer
x = 300,459,226.88
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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.