Finding the Fourth Proportional to 258,893,165.80, 388,339,748.70 and 137,960,813.80
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Solution
The fourth proportional to 258,893,165.80, 388,339,748.70 and 137,960,813.80 is: 206,941,220.70
Step by Step Solution
- Step 1: Write the proportion equation
258,893,165.80 : 388,339,748.70 = 137,960,813.80 : x - Step 2: Convert to fraction form
258,893,165.80/388,339,748.70 = 137,960,813.80/x - Step 3: Cross multiply
258,893,165.80x = 388,339,748.70 × 137,960,813.80 - Step 4: Simplify right side
258,893,165.80x = 53,575,667,761,539,496 - Step 5: Solve for x
x = 53,575,667,761,539,496/258,893,165.80 - Step 6: Final answer
x = 206,941,220.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.