Finding the Fourth Proportional to 389,741,641.68, 537,843,453.84 and 213,536,320.08
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Solution
The fourth proportional to 389,741,641.68, 537,843,453.84 and 213,536,320.08 is: 294,680,115.31
Step by Step Solution
- Step 1: Write the proportion equation
389,741,641.68 : 537,843,453.84 = 213,536,320.08 : x - Step 2: Convert to fraction form
389,741,641.68/537,843,453.84 = 213,536,320.08/x - Step 3: Cross multiply
389,741,641.68x = 537,843,453.84 × 213,536,320.08 - Step 4: Simplify right side
389,741,641.68x = 114,849,111,912,110,960 - Step 5: Solve for x
x = 114,849,111,912,110,960/389,741,641.68 - Step 6: Final answer
x = 294,680,115.31
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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.